ARM: dts: pxa3xx: clean up pxa3xx clock controller node name

The clock controller node does not need a unit slave designator as it does
not have a reg property. Also, remove the underscore from the name.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>

arch/arm/boot/dts/pxa3xx.dtsi

@@ -300,7 +300,7 @@ clocks {
 		#size-cells = <1>;
 		ranges;
 
-		clks: pxa3xx_clks@41300004 {
+		clks: clocks {
 			compatible = "marvell,pxa300-clocks";
 			#clock-cells = <1>;
 			status = "okay";