scsi: hisi_sas: Switch to new framework to support suspend and resume

For v3 hw we will add support for runtime PM which is only supported in new
framework. Legacy PM support and new framework are not allowed to be used
together. Switch to new framework to support suspend and resume.

Link: https://lore.kernel.org/r/1601649038-25534-3-git-send-email-john.garry@huawei.com
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>