ARM: dts: imx: make src node name generic

Node name should be generic, use "reset-controller" instead of "src" for
i.MX6/i.MX7 SoCs src nodes.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6qdl.dtsi

@@ -858,7 +858,7 @@ epit2: epit@20d4000 { /* EPIT2 */
 				interrupts = <0 57 IRQ_TYPE_LEVEL_HIGH>;
 			};
 
-			src: src@20d8000 {
+			src: reset-controller@20d8000 {
 				compatible = "fsl,imx6q-src", "fsl,imx51-src";
 				reg = <0x020d8000 0x4000>;
 				interrupts = <0 91 IRQ_TYPE_LEVEL_HIGH>,

arch/arm/boot/dts/imx6sl.dtsi

@@ -678,7 +678,7 @@ epit2: epit@20d4000 {
 				interrupts = <0 57 IRQ_TYPE_LEVEL_HIGH>;
 			};
 
-			src: src@20d8000 {
+			src: reset-controller@20d8000 {
 				compatible = "fsl,imx6sl-src", "fsl,imx51-src";
 				reg = <0x020d8000 0x4000>;
 				interrupts = <0 91 IRQ_TYPE_LEVEL_HIGH>,

arch/arm/boot/dts/imx6sx.dtsi

@@ -754,7 +754,7 @@ epit2: epit@20d4000 {
 				interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
 			};
 
-			src: src@20d8000 {
+			src: reset-controller@20d8000 {
 				compatible = "fsl,imx6sx-src", "fsl,imx51-src";
 				reg = <0x020d8000 0x4000>;
 				interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>,

arch/arm/boot/dts/imx6ul.dtsi

@@ -676,7 +676,7 @@ epit2: epit@20d4000 {
 				interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
 			};
 
-			src: src@20d8000 {
+			src: reset-controller@20d8000 {
 				compatible = "fsl,imx6ul-src", "fsl,imx51-src";
 				reg = <0x020d8000 0x4000>;
 				interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>,

arch/arm/boot/dts/imx7s.dtsi

@@ -624,7 +624,7 @@ clks: clock-controller@30380000 {
 				clock-names = "ckil", "osc";
 			};
 
-			src: src@30390000 {
+			src: reset-controller@30390000 {
 				compatible = "fsl,imx7d-src", "syscon";
 				reg = <0x30390000 0x10000>;
 				interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;