arm64: dts: apm: Update Merlin DT PCP PLL clock node for v2 hardware

Update Merlin DT PCP PLL clock node to reflect compatible
string change to reflect v2 hardware.

[dhdang: change patch subject]
Signed-off-by: NLoc Ho <lho@apm.com>
Signed-off-by: NDuc Dang <dhdang@apm.com>

arch/arm64/boot/dts/apm/apm-shadowcat.dtsi

@@ -224,7 +224,7 @@
 			};
 
 			socpll: socpll@17000120 {
-				compatible = "apm,xgene-socpll-clock";
+				compatible = "apm,xgene-socpll-v2-clock";
 				#clock-cells = <1>;
 				clocks = <&refclk 0>;
 				reg = <0x0 0x17000120 0x0 0x1000>;