scsi: ufs-renesas: Add support for Renesas R-Car UFS controller

Add support for Renesas R-Car UFS controller which needs vender specific
initialization.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

drivers/scsi/ufs/Kconfig

@@ -136,6 +136,18 @@ config SCSI_UFS_HISI
 	  Select this if you have UFS controller on Hisilicon chipset.
 	  If unsure, say N.
 
+config SCSI_UFS_RENESAS
+	tristate "Renesas specific hooks to UFS controller platform driver"
+	depends on (ARCH_RENESAS || COMPILE_TEST) && SCSI_UFSHCD_PLATFORM
+	help
+	  This selects the Renesas specific additions to UFSHCD platform driver.
+	  UFS host on Renesas needs some vendor specific configuration before
+	  accessing the hardware.
+
+	  Select this if you have UFS controller on Renesas chipset.
+
+	  If unsure, say N.
+
 config SCSI_UFS_TI_J721E
 	tristate "TI glue layer for Cadence UFS Controller"
 	depends on OF && HAS_IOMEM && (ARCH_K3 || COMPILE_TEST)

drivers/scsi/ufs/Makefile

@@ -23,4 +23,5 @@ obj-$(CONFIG_SCSI_UFSHCD_PCI) += ufshcd-pci.o
 obj-$(CONFIG_SCSI_UFSHCD_PLATFORM) += ufshcd-pltfrm.o
 obj-$(CONFIG_SCSI_UFS_HISI) += ufs-hisi.o
 obj-$(CONFIG_SCSI_UFS_MEDIATEK) += ufs-mediatek.o
+obj-$(CONFIG_SCSI_UFS_RENESAS) += ufs-renesas.o
 obj-$(CONFIG_SCSI_UFS_TI_J721E) += ti-j721e-ufs.o