ARM: dts: aspeed: Add clock phandle to GPIO

This enables a feature where the driver can debounce inputs.

Signed-off-by: Joel Stanley <[e-mail]>

arch/arm/boot/dts/aspeed-g4.dtsi

···
 				reg = <0x1e780000 0x1000>;
 				interrupts = <20>;
 				gpio-ranges = <&pinctrl 0 0 220>;
+				clocks = <&syscon ASPEED_CLK_APB>;
 				interrupt-controller;
 			};
 

arch/arm/boot/dts/aspeed-g5.dtsi

···
 				reg = <0x1e780000 0x1000>;
 				interrupts = <20>;
 				gpio-ranges = <&pinctrl 0 0 220>;
+				clocks = <&syscon ASPEED_CLK_APB>;
 				interrupt-controller;
 			};