egistrations to their completion
  in cases where a CVL may be received while registration in progress.
- Added unreg all rpi mailbox command before unreg vpi.

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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