Fixes the following errors:

lsi_scsi: error: Unhandled writeb 0x3a = 0x0
lsi_scsi: error: readb 0x3a

(cherry picked from commit bd8ee11a)

Signed-off-by: Sebastian Herbszt <herbszt@gmx.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>