nvme: add support for non shared namespaces

nvme: add support for non shared namespaces

Currently, nvme-cli assume that all the namespaces in an NVM subsystem
are shared between all the controllers. There is an option to create
both shared and non-shared namespaces among the controllers in the same
NVM subsystem. For example, in SR-IOV environment, one can attach 1
namespace to each controller that will be private and also 1 namespace
that will be shared among the secondary controllers only. In this case,
the output of "nvme list -v" will be wrong:

NVM Express Subsystems

Subsystem        Subsystem-NQN                                                                                    Controllers
---------------- ------------------------------------------------------------------------------------------------ ----------------
nvme-subsys5     nqn.1994-11.com.samsung:nvme:PM1733:2.5-inch:S4YNNE0N700448                                      nvme18, nvme19, nvme20, nvme21, nvme5

NVM Express Controllers

Device   SN                   MN                                       FR       TxPort Address        Subsystem    Namespaces
-------- -------------------- ---------------------------------------- -------- ------ -------------- ------------ ----------------
nvme18   S4YNNE0N700448       SAMSUNG MZWLJ1T9HBJR-00007               EPK98B5Q pcie   0000:0a:00.1   nvme-subsys5 nvme5n1, nvme5n2, nvme5n3, nvme5n4, nvme5n5, nvme5n6
nvme19   S4YNNE0N700448       SAMSUNG MZWLJ1T9HBJR-00007               EPK98B5Q pcie   0000:0a:00.2   nvme-subsys5 nvme5n1, nvme5n2, nvme5n3, nvme5n4, nvme5n5, nvme5n6
nvme20   S4YNNE0N700448       SAMSUNG MZWLJ1T9HBJR-00007               EPK98B5Q pcie   0000:0a:00.3   nvme-subsys5 nvme5n1, nvme5n2, nvme5n3, nvme5n4, nvme5n5, nvme5n6
nvme21   S4YNNE0N700448       SAMSUNG MZWLJ1T9HBJR-00007               EPK98B5Q pcie   0000:0a:00.4   nvme-subsys5 nvme5n1, nvme5n2, nvme5n3, nvme5n4, nvme5n5, nvme5n6
nvme5    S4YNNE0N700448       SAMSUNG MZWLJ1T9HBJR-00007               EPK98B5Q pcie   0000:0a:00.0   nvme-subsys5 nvme5n1, nvme5n2, nvme5n3, nvme5n4, nvme5n5, nvme5n6

NVM Express Namespaces

Device       NSID     Usage                      Format           Controllers
------------ -------- -------------------------- ---------------- ----------------
nvme5n1      1        343.60  GB / 343.60  GB    512   B +  0 B   nvme18, nvme19, nvme20, nvme21, nvme5
nvme5n2      2        274.88  GB / 274.88  GB    512   B +  0 B   nvme18, nvme19, nvme20, nvme21, nvme5
nvme5n3      3        283.47  GB / 283.47  GB    512   B +  0 B   nvme18, nvme19, nvme20, nvme21, nvme5
nvme5n4      4        292.06  GB / 292.06  GB    512   B +  0 B   nvme18, nvme19, nvme20, nvme21, nvme5
nvme5n5      5        317.83  GB / 317.83  GB    512   B +  0 B   nvme18, nvme19, nvme20, nvme21, nvme5
nvme5n6      6        137.44  GB / 137.44  GB    512   B +  0 B   nvme18, nvme19, nvme20, nvme21, nvme5

After the fix we'll get the following right topology:

NVM Express Subsystems

Subsystem        Subsystem-NQN                                                                                    Controllers
---------------- ------------------------------------------------------------------------------------------------ ----------------
nvme-subsys5     nqn.1994-11.com.samsung:nvme:PM1733:2.5-inch:S4YNNE0N700448                                      nvme18, nvme19, nvme20, nvme21, nvme5

NVM Express Controllers

Device   SN                   MN                                       FR       TxPort Address        Subsystem    Namespaces
-------- -------------------- ---------------------------------------- -------- ------ -------------- ------------ ----------------
nvme18   S4YNNE0N700448       SAMSUNG MZWLJ1T9HBJR-00007               EPK98B5Q pcie   0000:0a:00.1   nvme-subsys5 nvme5n2, nvme5n6
nvme19   S4YNNE0N700448       SAMSUNG MZWLJ1T9HBJR-00007               EPK98B5Q pcie   0000:0a:00.2   nvme-subsys5 nvme5n3, nvme5n6
nvme20   S4YNNE0N700448       SAMSUNG MZWLJ1T9HBJR-00007               EPK98B5Q pcie   0000:0a:00.3   nvme-subsys5 nvme5n4, nvme5n6
nvme21   S4YNNE0N700448       SAMSUNG MZWLJ1T9HBJR-00007               EPK98B5Q pcie   0000:0a:00.4   nvme-subsys5 nvme5n5, nvme5n6
nvme5    S4YNNE0N700448       SAMSUNG MZWLJ1T9HBJR-00007               EPK98B5Q pcie   0000:0a:00.0   nvme-subsys5 nvme5n1

NVM Express Namespaces

Device       NSID     Usage                      Format           Controllers
------------ -------- -------------------------- ---------------- ----------------
nvme5n1      1        343.60  GB / 343.60  GB    512   B +  0 B   nvme5
nvme5n2      2        274.88  GB / 274.88  GB    512   B +  0 B   nvme18
nvme5n3      3        283.47  GB / 283.47  GB    512   B +  0 B   nvme19
nvme5n4      4        292.06  GB / 292.06  GB    512   B +  0 B   nvme20
nvme5n5      5        317.83  GB / 317.83  GB    512   B +  0 B   nvme21
nvme5n6      6        137.44  GB / 137.44  GB    512   B +  0 B   nvme18, nvme19, nvme20, nvme21

Cc: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>