scsi: ufs: core: Switch 'check_for_bkops' to bool

Only checks true and false so it can be converted to bool.

Signed-off-by: ChanWoo Lee <cw9316.lee@samsung.com>
Link: https://lore.kernel.org/r/20221111062209.7365-1-cw9316.lee@samsung.com


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