This addresses the following gcc warning with "make W=1":

drivers/scsi/qla1280.c: In function ‘qla1280_nvram_config’:
drivers/scsi/qla1280.c:2188:36: warning: variable ‘ddma_conf’ set but
not used [-Wunused-but-set-variable]
 2188 |   uint16_t hwrev, cfg1, cdma_conf, ddma_conf;
      |                                    ^~~~~~~~~

Link: https://lore.kernel.org/r/20200907074518.2326360-3-yanaijie@huawei.comReported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>