scsi: hisi_sas: Align comments

Properly align comment lines in slot_index_alloc_quirk_v2_hw().

Link: https://lore.kernel.org/r/20220621072405.34394-1-jiangjian@cdjrlc.comSigned-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>