ixgbe: Save VF info and take references

ixgbe: Save VF info and take references

Orabug: 23177316

Save VF device pointers and take references to speed accesses used
to monitor the device behavior to avoid slot resets. The saved
information avoids lock contention during the search used to access
each of the VFs.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Darin Miller <darin.j.miller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 988d13073fe122f0b6a2b80b5f2aa1b0717f9edb)
Signed-off-by: Brian Maly <brian.maly@oracle.com>