scsi: ufs: ufs-exynos: Support ExynosAuto v9 UFS

Add support for the ExynosAuto v9 SoC. This requires controlling the UFS IP
shareability register via syscon and regmap.  The offset of the register
can be different according to the UFS instance and SoC specific offset
value. As a result, we need to get the offset value from DT property.

Unlike exynos7, this implementation has a different M-PHY setting which
must be configured via exynosauto_ufs_pre_link.

Link: https://lore.kernel.org/r/20211018124216.153072-12-chanho61.park@samsung.com


Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Kiwoong Kim <kwmad.kim@samsung.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>