scsi: hisi_sas: Coding style cleanup

Remove superfluous blank lines and symbols. Add spaces around operators.

Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20250414080845.1220997-3-liyihang9@huawei.com


Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>