ARM: mstar: Link cpupll to cpu

The CPU clock is sourced from the CPU PLL.
Link cpupll to the cpu so that frequency scaling can happen.

Signed-off-by: Daniel Palmer <daniel@0x0f.com>
Reviewed-by: Romain Perier <romain.perier@gmail.com>

arch/arm/boot/dts/mstar-v7.dtsi

@@ -21,6 +21,8 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x0>;
+			clocks = <&cpupll>;
+			clock-names = "cpuclk";
 		};
 	};