dm: exynos: dts: Use GPIO bank phandles for GPIOs

U-Boot now supports using GPIOs using bank phandles instead of global
numbers. Update the exynos device tree files to use this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/arch/arm/dts/exynos4412-odroid.dts b/arch/arm/dts/exynos4412-odroid.dts
index c78efec..29ad6ab 100644
--- a/arch/arm/dts/exynos4412-odroid.dts
+++ b/arch/arm/dts/exynos4412-odroid.dts
@@ -51,7 +51,7 @@
 	sdhci@12530000 {
 		samsung,bus-width = <4>;
 		samsung,timing = <1 2 3>;
-		cd-gpios = <&gpio 122 0>;
+		cd-gpios = <&gpk2 2 0>;
 	};
 
 	sdhci@12540000 {