sparc64: add ccb kill and info to DAX driver

sparc64: add ccb kill and info to DAX driver

Orabug: 25825763

Introduces ccb kill and ccb info into the DAX driver. An application may
use this functionality by specifying a completion area offset, which
corresponds to a submitted CCB, to the new ccb_kill and ccb_info ioctls.
This completion area offset is converted into an RA and provided to the
hypervisor. Additionally, this patch adds the functionality to kill ccbs
which timeout within the driver (during cleanup or any of the dax/fw
functionality tests).

Signed-off-by: Jonathan Helman <jonathan.helman@oracle.com>
Reviewed-by: Sanath Kumar <sanath.s.kumar@oracle.com>
Reviewed-by: Rob Gardner <rob.gardner@oracle.com>
Signed-off-by: Allen Pais <allen.pais@oracle.com>