ARM: dts: Configure simple-pm-bus for omap4 l4_wkup

We can now probe interconnects with device tree only configuration using
simple-pm-bus and genpd.
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap4-l4.dtsi

@@ -944,7 +944,10 @@ l4_cfg_target_0: target-module@0 {	/* 0x4a300000, ap 67 14.0 */
 };
 
 &l4_wkup {						/* 0x4a300000 */
-	compatible = "ti,omap4-l4-wkup", "simple-bus";
+	compatible = "ti,omap4-l4-wkup", "simple-pm-bus";
+	power-domains = <&prm_wkup>;
+	clocks = <&l4_wkup_clkctrl OMAP4_L4_WKUP_CLKCTRL 0>;
+	clock-names = "fck";
 	reg = <0x4a300000 0x800>,
 	      <0x4a300800 0x800>,
 	      <0x4a301000 0x1000>;
@@ -956,7 +959,7 @@ &l4_wkup {						/* 0x4a300000 */
 		 <0x00020000 0x4a320000 0x010000>;	/* segment 2 */
 
 	segment@0 {					/* 0x4a300000 */
-		compatible = "simple-bus";
+		compatible = "simple-pm-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges = <0x00000000 0x00000000 0x000800>,	/* ap 0 */
@@ -1062,7 +1065,7 @@ omap4_scm_wkup: scm@c000 {
 	};
 
 	segment@10000 {					/* 0x4a310000 */
-		compatible = "simple-bus";
+		compatible = "simple-pm-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges = <0x00000000 0x00010000 0x001000>,	/* ap 5 */
@@ -1231,7 +1234,7 @@ omap4_pmx_wkup: pinmux@40 {
 	};
 
 	segment@20000 {					/* 0x4a320000 */
-		compatible = "simple-bus";
+		compatible = "simple-pm-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges = <0x00006000 0x00026000 0x001000>,	/* ap 13 */