ARM: dts: rza2mevb: Add SDHI support

The RZ/A2M EVB supports 2 SD card slots. A micro SD slot on the CPU
board, and a full SD card slot on the sub board.

Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r7s9210-rza2mevb.dts

@@ -90,6 +90,16 @@
 			 <RZA2_PINMUX(PORT3, 4, 1)>, /* ET1_MDIO */
 			 <RZA2_PINMUX(PORTL, 1, 5)>; /* IRQ5 */
 	};
+
+	sdhi0_pins: sdhi0 {
+		pinmux = <RZA2_PINMUX(PORT5, 0, 3)>,	/* SD0_CD */
+			 <RZA2_PINMUX(PORT5, 1, 3)>;	/* SD0_WP */
+	};
+
+	sdhi1_pins: sdhi1 {
+		pinmux = <RZA2_PINMUX(PORT5, 4, 3)>,	/* SD1_CD */
+			 <RZA2_PINMUX(PORT5, 5, 3)>;	/* SD1_WP */
+	};
 };
 
 /* High resolution System tick timers */
@@ -130,3 +140,17 @@
 		reg = <0>;
 	};
 };
+
+&sdhi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdhi0_pins>;
+	bus-width = <4>;
+	status = "okay";
+};
+
+&sdhi1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdhi1_pins>;
+	bus-width = <4>;
+	status = "okay";
+};