ARM: dts: aspeed: Add PWM and tachometer node

The PWM/tach unit has a clock and reset phandle. It needs both in order
to function correctly.

Signed-off-by: Joel Stanley <[e-mail]>
--
v3:
Add the pwm reset phandle

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

···
 				clocks = <&syscon ASPEED_CLK_APB>;
 			};
 
+			pwm_tacho: pwm-tacho-controller@1e786000 {
+				compatible = "aspeed,ast2400-pwm-tacho";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0x1e786000 0x1000>;
+				clocks = <&syscon ASPEED_CLK_APB>;
+				resets = <&syscon ASPEED_RESET_PWM>;
+				status = "disabled";
+			};
+
 			vuart: serial@1e787000 {
 				compatible = "aspeed,ast2400-vuart";
 				reg = <0x1e787000 0x40>;

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

···
 				status = "disabled";
 			};
 
+			pwm_tacho: pwm-tacho-controller@1e786000 {
+				compatible = "aspeed,ast2500-pwm-tacho";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0x1e786000 0x1000>;
+				clocks = <&syscon ASPEED_CLK_APB>;
+				resets = <&syscon ASPEED_RESET_PWM>;
+				status = "disabled";
+			};
+
 			vuart: serial@1e787000 {
 				compatible = "aspeed,ast2500-vuart";
 				reg = <0x1e787000 0x40>;