scsi: mpi3mr: Update driver version to 8.15.0.5.50

JIRA: https://issues.redhat.com/browse/RHEL-111654

Bump driver version to 8.15.0.5.50 to match the latest release.

Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Link: https://lore.kernel.org/r/20250820084138.228471-7-chandrakanth.patil@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 80a4034)
Signed-off-by: Chandrakanth Patil <chanpati@redhat.com>
Conflicts:
        drivers/scsi/mpi3mr/mpi3mr.h
        (Directly updated the driver to the latest version, skipping intermediary versions.
        As a result, this patch differs from the upstream version)

Author: Chandrakanth Patil

drivers/scsi/mpi3mr/mpi3mr.h

@@ -56,8 +56,8 @@ extern struct list_head mrioc_list;
 extern int prot_mask;
 extern atomic64_t event_counter;
 
-#define MPI3MR_DRIVER_VERSION	"8.13.0.5.50"
-#define MPI3MR_DRIVER_RELDATE	"20-February-2025"
+#define MPI3MR_DRIVER_VERSION	"8.15.0.5.50"
+#define MPI3MR_DRIVER_RELDATE	"12-August-2025"
 
 #define MPI3MR_DRIVER_NAME	"mpi3mr"
 #define MPI3MR_DRIVER_LICENSE	"GPL"