ARM: dts: OMAP5: switch to compatible pinctrl

Now that ti,omap5-padconf is available, switch over to that compatible
property. Retain pinctrl-single for legacy support.

While at it, mark pinctrl as interrupt controller so that it can be
used with interrupts-extended property for wakeup events.
Signed-off-by: Nishanth Menon <nm@ti.com>

arch/arm/boot/dts/omap5.dtsi

@@ -187,18 +187,22 @@ counter32k: counter@4ae04000 {
 		};
 
 		omap5_pmx_core: pinmux@4a002840 {
-			compatible = "ti,omap4-padconf", "pinctrl-single";
+			compatible = "ti,omap5-padconf", "pinctrl-single";
 			reg = <0x4a002840 0x01b6>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			#interrupt-cells = <1>;
+			interrupt-controller;
 			pinctrl-single,register-width = <16>;
 			pinctrl-single,function-mask = <0x7fff>;
 		};
 		omap5_pmx_wkup: pinmux@4ae0c840 {
-			compatible = "ti,omap4-padconf", "pinctrl-single";
+			compatible = "ti,omap5-padconf", "pinctrl-single";
 			reg = <0x4ae0c840 0x0038>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			#interrupt-cells = <1>;
+			interrupt-controller;
 			pinctrl-single,register-width = <16>;
 			pinctrl-single,function-mask = <0x7fff>;
 		};