arm64: dts: imx8mq: add clock for GPIO node

i.MX8MQ has clock gate for each GPIO bank, add clock info
to GPIO node for clock management.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mq.dtsi

@@ -172,6 +172,7 @@ gpio1: gpio@30200000 {
 				reg = <0x30200000 0x10000>;
 				interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>,
 				             <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk IMX8MQ_CLK_GPIO1_ROOT>;
 				gpio-controller;
 				#gpio-cells = <2>;
 				interrupt-controller;
@@ -183,6 +184,7 @@ gpio2: gpio@30210000 {
 				reg = <0x30210000 0x10000>;
 				interrupts = <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>,
 				             <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk IMX8MQ_CLK_GPIO2_ROOT>;
 				gpio-controller;
 				#gpio-cells = <2>;
 				interrupt-controller;
@@ -194,6 +196,7 @@ gpio3: gpio@30220000 {
 				reg = <0x30220000 0x10000>;
 				interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>,
 				             <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk IMX8MQ_CLK_GPIO3_ROOT>;
 				gpio-controller;
 				#gpio-cells = <2>;
 				interrupt-controller;
@@ -205,6 +208,7 @@ gpio4: gpio@30230000 {
 				reg = <0x30230000 0x10000>;
 				interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>,
 				             <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk IMX8MQ_CLK_GPIO4_ROOT>;
 				gpio-controller;
 				#gpio-cells = <2>;
 				interrupt-controller;
@@ -216,6 +220,7 @@ gpio5: gpio@30240000 {
 				reg = <0x30240000 0x10000>;
 				interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
 				             <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk IMX8MQ_CLK_GPIO5_ROOT>;
 				gpio-controller;
 				#gpio-cells = <2>;
 				interrupt-controller;