ARM: dts: am335x-evm[sdk]: switch mmc1 to 4-bit mode

Set bus-width to make SD card operate in 4 bit mode.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>

arch/arm/boot/dts/am335x-evm.dts

@@ -521,4 +521,5 @@
 &mmc1 {
 	status = "okay";
 	vmmc-supply = <&vmmc_reg>;
+	bus-width = <4>;
 };