phy_list_lock is not held when using asd_sas_port->phy_list in the mvsas
driver. Add spin_lock/unlock in those places.

Link: https://lore.kernel.org/r/1639999298-244569-7-git-send-email-chenxiang66@hisilicon.comSigned-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>