arm/dts: Add pinctrl driver entries for omap2/3/4

Add pinctrl driver entries for omap2+. These all use
the generic pinctrl-single driver for the padconf
registers.

Cc: devicetree-discuss@lists.ozlabs.org
Acked-by: Linus Walleij <linus.walleij@linaro.org>
[tony@atomide.com: updated to drop omap2420.dtsi rename changes]
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/boot/dts/omap2420.dtsi b/arch/arm/boot/dts/omap2420.dtsi
index 6174d3d..bfd76b4 100644
--- a/arch/arm/boot/dts/omap2420.dtsi
+++ b/arch/arm/boot/dts/omap2420.dtsi
@@ -14,6 +14,15 @@
 	compatible = "ti,omap2420", "ti,omap2";
 
 	ocp {
+		omap2420_pmx: pinmux@48000030 {
+			compatible = "ti,omap2420-padconf", "pinctrl-single";
+			reg = <0x48000030 0x0113>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			pinctrl-single,register-width = <8>;
+			pinctrl-single,function-mask = <0x3f>;
+		};
+
 		mcbsp1: mcbsp@48074000 {
 			compatible = "ti,omap2420-mcbsp";
 			reg = <0x48074000 0xff>;