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/exynos5420-peach-pit.dts b/arch/arm/dts/exynos5420-peach-pit.dts
index d1d8735..b801de9 100644
--- a/arch/arm/dts/exynos5420-peach-pit.dts
+++ b/arch/arm/dts/exynos5420-peach-pit.dts
@@ -17,7 +17,7 @@
 		"google,peach", "samsung,exynos5420", "samsung,exynos5";
 
 	config {
-		google,bad-wake-gpios = <&gpio 0x56 0>; /* gpx0-6 */
+		google,bad-wake-gpios = <&gpx0 6 GPIO_ACTIVE_HIGH>;
 		hwid = "PIT TEST A-A 7848";
 		lazy-init = <1>;
 	};
@@ -108,7 +108,7 @@
 			spi-half-duplex;
 			spi-max-timeout-ms = <1100>;
 			spi-frame-header = <0xec>;
-			ec-interrupt = <&gpio 93 1>; /* GPX1_5 */
+			ec-interrupt = <&gpx1 5 GPIO_ACTIVE_LOW>;
 
 			/*
 			 * This describes the flash memory within the EC. Note
@@ -124,11 +124,11 @@
 	};
 
 	xhci@12000000 {
-		samsung,vbus-gpio = <&gpio 0x40 0>; /* H00 */
+		samsung,vbus-gpio = <&gph0 0 GPIO_ACTIVE_HIGH>;
 	};
 
 	xhci@12400000 {
-		samsung,vbus-gpio = <&gpio 0x41 0>; /* H01 */
+		samsung,vbus-gpio = <&gph0 1 GPIO_ACTIVE_HIGH>;
 	};
 
 	fimd@14400000 {