illumos gate

Build errors with gcc 12:

    ../../intel/io/scsi/adapters/arcmsr/arcmsr.c: In function 'arcmsr_report_sense_info':
    ../../intel/io/scsi/adapters/arcmsr/arcmsr.c:2098:40: error: the comparison will always evaluate as 'true' for the address of 'sts_sensedata' will never be NULL [-Werror=address]
     2098 |         if (&arq_status->sts_sensedata != NULL) {
          |                                        ^~
    In file included from ../../common/sys/scsi/scsi_types.h:91,
                     from ../../common/sys/scsi/scsi.h:34,
                     from ../../intel/io/scsi/adapters/arcmsr/arcmsr.c:56:
    ../../common/sys/scsi/generic/status.h:78:36: note: 'sts_sensedata' declared here
       78 |         struct scsi_extended_sense sts_sensedata;
          |                                    ^~~~~~~~~~~~~
    ../../intel/io/scsi/adapters/arcmsr/arcmsr.c: In function 'arcmsr_iop_message_xfer':
    ../../intel/io/scsi/adapters/arcmsr/arcmsr.c:4358:56: error: the comparison will always evaluate as 'true' for the address of 'sts_sensedata' will never be NULL [-Werror=address]
     4358 |                         if (&arq_status->sts_sensedata != NULL) {
          |                                                        ^~
    ../../common/sys/scsi/generic/status.h:78:36: note: 'sts_sensedata' declared here
       78 |         struct scsi_extended_sense sts_sensedata;
          |                                    ^~~~~~~~~~~~~
    ../../intel/io/scsi/adapters/arcmsr/arcmsr.c:4410:64: error: the comparison will always evaluate as 'true' for the address of 'sts_sensedata' will never be NULL [-Werror=address]
     4410 |                                 if (&arq_status->sts_sensedata != NULL) {
          |                                                                ^~
    ../../common/sys/scsi/generic/status.h:78:36: note: 'sts_sensedata' declared here
       78 |         struct scsi_extended_sense sts_sensedata;
          |                                    ^~~~~~~~~~~~~
    cc1: all warnings being treated as errors

Testing done: build/install/boot, but I do not have the hardware, so can not confirm the working driver.