ARM: shmobile: Use r8a7790 suffix for MMCIF compat string

Add "renesas,mmcif-r8a7790" to the compatible string for MMCIF
in case of r8a7790. This makes the MMCIF follow the same style
as the other devices and also makes it more future proof.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7790.dtsi

@@ -230,7 +230,7 @@ i2c3: i2c@e6540000 {
 	};
 
 	mmcif0: mmcif@ee200000 {
-		compatible = "renesas,sh-mmcif";
+		compatible = "renesas,mmcif-r8a7790", "renesas,sh-mmcif";
 		reg = <0 0xee200000 0 0x80>;
 		interrupt-parent = <&gic>;
 		interrupts = <0 169 IRQ_TYPE_LEVEL_HIGH>;
@@ -239,7 +239,7 @@ mmcif0: mmcif@ee200000 {
 	};
 
 	mmcif1: mmc@ee220000 {
-		compatible = "renesas,sh-mmcif";
+		compatible = "renesas,mmcif-r8a7790", "renesas,sh-mmcif";
 		reg = <0 0xee220000 0 0x80>;
 		interrupt-parent = <&gic>;
 		interrupts = <0 170 IRQ_TYPE_LEVEL_HIGH>;