ARM: dts: am437x-gp-evm: add DT nodes for ov2659 sensor

this patch does the following:
1: adds DT node for fixed oscillator.
2: adds DT node entries for ov2659 sensor
3: adds remote-endpoint entry for VPFE.
Signed-off-by: NLad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am437x-gp-evm.dts

@@ -116,6 +116,14 @@
 			};
 		};
 	};
+
+	/* fixed 12MHz oscillator */
+	refclk: oscillator {
+		#clock-cells = <0>;
+		compatible = "fixed-clock";
+		clock-frequency = <12000000>;
+	};
+
 };
 
 &am43xx_pinmux {
@@ -464,6 +472,21 @@
 			regulator-always-on;
 		};
 	};
+
+	ov2659@30 {
+		compatible = "ovti,ov2659";
+		reg = <0x30>;
+
+		clocks = <&refclk 0>;
+		clock-names = "xvclk";
+
+		port {
+			ov2659_0: endpoint {
+				remote-endpoint = <&vpfe1_ep>;
+				link-frequencies = /bits/ 64 <70000000>;
+			};
+		};
+	};
 };
 
 &i2c1 {
@@ -483,6 +506,21 @@
 		touchscreen-size-x = <1024>;
 		touchscreen-size-y = <600>;
 	};
+
+	ov2659@30 {
+		compatible = "ovti,ov2659";
+		reg = <0x30>;
+
+		clocks = <&refclk 0>;
+		clock-names = "xvclk";
+
+		port {
+			ov2659_1: endpoint {
+				remote-endpoint = <&vpfe0_ep>;
+				link-frequencies = /bits/ 64 <70000000>;
+			};
+		};
+	};
 };
 
 &epwmss0 {
@@ -727,7 +765,7 @@
 
 	port {
 		vpfe0_ep: endpoint {
-			/* remote-endpoint = <&sensor>; add once we have it */
+			remote-endpoint = <&ov2659_1>;
 			ti,am437x-vpfe-interface = <0>;
 			bus-width = <8>;
 			hsync-active = <0>;
@@ -744,7 +782,7 @@
 
 	port {
 		vpfe1_ep: endpoint {
-			/* remote-endpoint = <&sensor>; add once we have it */
+			remote-endpoint = <&ov2659_0>;
 			ti,am437x-vpfe-interface = <0>;
 			bus-width = <8>;
 			hsync-active = <0>;