ARM64: dts: ls2080a: fix eSDHC endianness

Add the "little-endian" property to fix the issue that eSDHC
is not working and dumping out "mmc0: Controller never released
inhibit bit(s)." error messages constantly.

Fixes: 5461597f ("dts/ls2080a: Update DTSI to add support of various peripherals")
Signed-off-by: NYangbo Lu <yangbo.lu@freescale.com>
Signed-off-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NKevin Hilman <khilman@linaro.org>

arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi

@@ -269,6 +269,7 @@
 			clock-frequency = <0>;	/* Updated by bootloader */
 			voltage-ranges = <1800 1800 3300 3300>;
 			sdhci,auto-cmd12;
+			little-endian;
 			bus-width = <4>;
 		};