mmc: renesas-sdhi: Enable support for R8A774A1

The r8a774a1 is compatible with the generic rcar-gen3-sdhi controller.
This patch adds the compatibilty flag, to support the SDHI controller.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/drivers/mmc/renesas-sdhi.c b/drivers/mmc/renesas-sdhi.c
index d6ea99d..d80b3fc 100644
--- a/drivers/mmc/renesas-sdhi.c
+++ b/drivers/mmc/renesas-sdhi.c
@@ -20,7 +20,6 @@
 #include <linux/sizes.h>
 #include <power/regulator.h>
 #include <asm/unaligned.h>
-
 #include "tmio-common.h"
 
 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
@@ -843,6 +842,7 @@
 	{ .compatible = "renesas,sdhi-r8a7794", .data = RENESAS_GEN2_QUIRKS },
 	{ .compatible = "renesas,sdhi-r8a7795", .data = RENESAS_GEN3_QUIRKS },
 	{ .compatible = "renesas,sdhi-r8a7796", .data = RENESAS_GEN3_QUIRKS },
+	{ .compatible = "renesas,rcar-gen3-sdhi", .data = RENESAS_GEN3_QUIRKS },
 	{ .compatible = "renesas,sdhi-r8a77965", .data = RENESAS_GEN3_QUIRKS },
 	{ .compatible = "renesas,sdhi-r8a77970", .data = RENESAS_GEN3_QUIRKS },
 	{ .compatible = "renesas,sdhi-r8a77990", .data = RENESAS_GEN3_QUIRKS },