ARM: zynq: DT: Add pinctrl node

Add pinctrl node to DTSI.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/dts/zynq-7000.dtsi

@@ -235,7 +235,7 @@
 		slcr: slcr@f8000000 {
 			#address-cells = <1>;
 			#size-cells = <1>;
-			compatible = "xlnx,zynq-slcr", "syscon";
+			compatible = "xlnx,zynq-slcr", "syscon", "simple-bus";
 			reg = <0xF8000000 0x1000>;
 			ranges;
 			clkc: clkc@100 {
@@ -256,6 +256,12 @@
 						"dbg_trc", "dbg_apb";
 				reg = <0x100 0x100>;
 			};
+
+			pinctrl0: pinctrl@700 {
+				compatible = "xlnx,pinctrl-zynq";
+				reg = <0x700 0x200>;
+				syscon = <&slcr>;
+			};
 		};
 
 		dmac_s: dmac@f8003000 {