exynos: dts: Add display-related device tree fragments

Bring in device tree pieces related to display from Linux 4.4 for:

- snow
- peach_pit
- peach_pi
- spring

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/arch/arm/dts/exynos5250-snow.dts b/arch/arm/dts/exynos5250-snow.dts
index bda5499..29c13c1 100644
--- a/arch/arm/dts/exynos5250-snow.dts
+++ b/arch/arm/dts/exynos5250-snow.dts
@@ -198,6 +198,20 @@
 			reset-gpios = <&gpx1 5 GPIO_ACTIVE_LOW>;
 			hotplug-gpios = <&gpx0 7 GPIO_ACTIVE_HIGH>;
 			edid-emulation = <5>;
+
+			ports {
+				port@0 {
+					bridge_out: endpoint {
+						remote-endpoint = <&panel_in>;
+					};
+				};
+
+				port@1 {
+					bridge_in: endpoint {
+						remote-endpoint = <&dp_out>;
+					};
+				};
+			};
 		};
 
 		soundcodec@22 {
@@ -223,6 +237,27 @@
 		};
 	};
 
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm 0 1000000 0>;
+		brightness-levels = <0 100 500 1000 1500 2000 2500 2800>;
+		default-brightness-level = <7>;
+		enable-gpios = <&gpx3 0 GPIO_ACTIVE_HIGH>;
+		power-supply = <&fet1>;
+	};
+
+	panel: panel {
+		compatible = "auo,b116xw03";
+		power-supply = <&fet6>;
+		backlight = <&backlight>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&bridge_out>;
+			};
+		};
+	};
+
 	spi@131b0000 {
 		spi-max-frequency = <1000000>;
 		spi-deactivate-delay = <100>;
@@ -337,6 +372,15 @@
 		samsung,dynamic-range = <0>;
 		samsung,ycbcr-coeff = <0>;
 		samsung,color-depth = <1>;
+		samsung,hpd-gpio = <&gpx0 7 GPIO_ACTIVE_HIGH>;
+
+		ports {
+			port@0 {
+				dp_out: endpoint {
+					remote-endpoint = <&bridge_in>;
+				};
+			};
+		};
 	};
 
 };