ARM: at91: dts: sama5d3: add ov2640 camera sensor support

According to v4l2 dt document, we add:
  a camera host: ISI port.
  a i2c camera sensor: ov2640 port.
to sama5d3xmb.dtsi.

The ov2640 node defines the pinctrls, clocks and refer to isi port.
The ISI node also has a reference to the ov2640 port.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/sama5d3.dtsi

@@ -219,9 +219,15 @@
 				compatible = "atmel,at91sam9g45-isi";
 				reg = <0xf0034000 0x4000>;
 				interrupts = <37 IRQ_TYPE_LEVEL_HIGH 5>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&pinctrl_isi_data_0_7>;
 				clocks = <&isi_clk>;
 				clock-names = "isi_clk";
 				status = "disabled";
+				port {
+					#address-cells = <1>;
+					#size-cells = <0>;
+				};
 			};
 
 			sfr: sfr@f0038000 {