FROMGIT: scsi: ufs: core: Add reinit_notify() callback

reinit_notify() callback can be used by the UFS controller drivers to
perform changes required for UFSHCD reinit that can happen during max gear
switch.

Tested-by: Andrew Halaney <ahalaney@redhat.com> # Qdrive3/sa8540p-ride
Change-Id: Ib9cf5903405eab16a14ed55e17b6505592de711b
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit c2c38c57 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git

 for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>