linux-phytec-ti

scsi: pmcraid: use correct size unit when calling find_first_zero_bit()

find_first_zero_bit()'s parameter 'size' is defined in bits, not in
bytes.

Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>