scsi: message: fusion: struct _CONFIG_PAGE_IOC_3: Replace 1-element array with flexib...

scsi: message: fusion: struct _CONFIG_PAGE_IOC_3: Replace 1-element array with flexible array

Replace the deprecated[1] use of a 1-element array in struct
_CONFIG_PAGE_IOC_3 with a modern flexible array.

Additionally add __counted_by annotation since PhysDisk is only ever
accessed via a loops bounded by NumPhysDisks:

lsi/mpi_cnfg.h:    IOC_3_PHYS_DISK             PhysDisk[] __counted_by(NumPhysDisks); /* 08h */
mptscsih.c:	for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
mptscsih.c:		if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) &&
mptscsih.c:		    (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) {
mptscsih.c:	for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
mptscsih.c:		    ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum);
mptscsih.c:		    ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum,
mptscsih.c:	for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
mptscsih.c:		if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) &&
mptscsih.c:		    (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) {
mptscsih.c:			rc = ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum;
mptscsih.c:	for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
mptscsih.c:		    ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum);
mptscsih.c:		    ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum,

No binary differences are present after this conversion.

Link: https://github.com/KSPP/linux/issues/79
Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://lore.kernel.org/r/20240711172821.123936-5-kees@kernel.org
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>