ARM: dts: rockchip: move rk3288 edp phy under the GRF

The edp-phy control is a part of the General Register Files and
with a recent patch in 4.6 the phy driver can now also handle this
correctly, so move the dts node under the GRF as well.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288.dtsi

@@ -201,15 +201,6 @@ xin24m: oscillator {
 		#clock-cells = <0>;
 	};
 
-	edp_phy: edp-phy {
-		compatible = "rockchip,rk3288-dp-phy";
-		clocks = <&cru SCLK_EDP_24M>;
-		clock-names = "24m";
-		rockchip,grf = <&grf>;
-		#phy-cells = <0>;
-		status = "disabled";
-	};
-
 	timer {
 		compatible = "arm,armv7-timer";
 		arm,cpu-registers-not-fw-configured;
@@ -756,6 +747,14 @@ cru: clock-controller@ff760000 {
 	grf: syscon@ff770000 {
 		compatible = "rockchip,rk3288-grf", "syscon", "simple-mfd";
 		reg = <0xff770000 0x1000>;
+
+		edp_phy: edp-phy {
+			compatible = "rockchip,rk3288-dp-phy";
+			clocks = <&cru SCLK_EDP_24M>;
+			clock-names = "24m";
+			#phy-cells = <0>;
+			status = "disabled";
+		};
 	};
 
 	wdt: watchdog@ff800000 {