FROMGIT: scsi: ufs: ufs-mediatek: Disable HCI before HW reset

MediaTek ufshci needs to be disabled before HW reset to avoid potential
issues.

Bug: 191731858
Change-Id: Ie8c9789ef05105923ca2039d38da3b1a1db0932d
(cherry picked from commit f9c602f3
git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Link: https://lore.kernel.org/r/20210528033624.12170-3-alice.chao@mediatek.com


Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Alice.Chao <alice.chao@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>