[SCSI] bfa: Clear LL_HALT and PSS_ERR bit when IOC crashes.

Clear LL_HALT and PSS_ERR bit in the interrupt status register on an IOC crash.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>