arm: dts: k3-am65: Move pinctrl nodes out of U-Boot specific dtsi

Only U-Boot specifc DT properties or overrides, must be in -u-boot.dtsi.
Pinctrl nodes does not belong here. Now that pinctrl nodes are in kernel
DT, there is no reason to be keep these in -u-boot.dtsi. Move them to
proper places so that it would ease copying DT entries from kernel DT.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/arch/arm/dts/k3-am65-wakeup.dtsi b/arch/arm/dts/k3-am65-wakeup.dtsi
index 1f591ef..1b67747 100644
--- a/arch/arm/dts/k3-am65-wakeup.dtsi
+++ b/arch/arm/dts/k3-am65-wakeup.dtsi
@@ -34,6 +34,14 @@
 		};
 	};
 
+	wkup_pmx0: pinmux@4301c000 {
+		compatible = "pinctrl-single";
+		reg = <0x4301c000 0x118>;
+		#pinctrl-cells = <1>;
+		pinctrl-single,register-width = <32>;
+		pinctrl-single,function-mask = <0xffffffff>;
+	};
+
 	wkup_uart0: serial@42300000 {
 		compatible = "ti,am654-uart";
 		reg = <0x42300000 0x100>;