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/exynos5.dtsi b/arch/arm/dts/exynos5.dtsi
index 179584c..8650800 100644
--- a/arch/arm/dts/exynos5.dtsi
+++ b/arch/arm/dts/exynos5.dtsi
@@ -163,13 +163,14 @@
 	};
 
 	fimd@14400000 {
+		u-boot,dm-pre-reloc;
 		compatible = "samsung,exynos-fimd";
 		reg = <0x14400000 0x10000>;
 		#address-cells = <1>;
 		#size-cells = <1>;
 	};
 
-	dp@145b0000 {
+	dp: dp@145b0000 {
 		compatible = "samsung,exynos5-dp";
 		reg = <0x145b0000 0x1000>;
 		#address-cells = <1>;