scsi: mpi3mr: Add retry mechanism for IOC shutdown with timeout reset

scsi: mpi3mr: Add retry mechanism for IOC shutdown with timeout reset

Enhance the IOC shutdown process to handle transient failures during
controller cleanup. Add retry logic with configurable maximum retry
count (MPI3MR_MAX_SHUTDOWN_RETRY_COUNT) and proper timeout management
that resets on each retry attempt. This ensures shutdown can recover
from temporary issues without failing completely.

Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Link: https://patch.msgid.link/20260320090326.47544-4-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>