ARM: dts: zynq: Add devicetree entry for Xilinx Zynq reset controller.

Signed-off-by: Moritz Fischer <[e-mail]>
Signed-off-by: Michal Simek <[e-mail]>
Signed-off-by: Olof Johansson <[e-mail]>

arch/arm/boot/dts/zynq-7000.dtsi

···
 				reg = <0x100 0x100>;
 			};
 
+			rstc: rstc@200 {
+				compatible = "xlnx,zynq-reset";
+				reg = <0x200 0x48>;
+				#reset-cells = <1>;
+				syscon = <&slcr>;
+			};
+
 			pinctrl0: pinctrl@700 {
 				compatible = "xlnx,pinctrl-zynq";
 				reg = <0x700 0x200>;