ARM: dts: mxs: add missing reg properties for GPIO banks

This patch adds the missing reg properties for the MXS GPIO banks
in order to fix the dtc warnings.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx23.dtsi

@@ -111,6 +111,7 @@ pinctrl@80018000 {
 
 				gpio0: gpio@0 {
 					compatible = "fsl,imx23-gpio", "fsl,mxs-gpio";
+					reg = <0>;
 					interrupts = <16>;
 					gpio-controller;
 					#gpio-cells = <2>;
@@ -120,6 +121,7 @@ gpio0: gpio@0 {
 
 				gpio1: gpio@1 {
 					compatible = "fsl,imx23-gpio", "fsl,mxs-gpio";
+					reg = <1>;
 					interrupts = <17>;
 					gpio-controller;
 					#gpio-cells = <2>;
@@ -129,6 +131,7 @@ gpio1: gpio@1 {
 
 				gpio2: gpio@2 {
 					compatible = "fsl,imx23-gpio", "fsl,mxs-gpio";
+					reg = <2>;
 					interrupts = <18>;
 					gpio-controller;
 					#gpio-cells = <2>;

arch/arm/boot/dts/imx28.dtsi

@@ -165,6 +165,7 @@ pinctrl: pinctrl@80018000 {
 
 				gpio0: gpio@0 {
 					compatible = "fsl,imx28-gpio", "fsl,mxs-gpio";
+					reg = <0>;
 					interrupts = <127>;
 					gpio-controller;
 					#gpio-cells = <2>;
@@ -174,6 +175,7 @@ gpio0: gpio@0 {
 
 				gpio1: gpio@1 {
 					compatible = "fsl,imx28-gpio", "fsl,mxs-gpio";
+					reg = <1>;
 					interrupts = <126>;
 					gpio-controller;
 					#gpio-cells = <2>;
@@ -183,6 +185,7 @@ gpio1: gpio@1 {
 
 				gpio2: gpio@2 {
 					compatible = "fsl,imx28-gpio", "fsl,mxs-gpio";
+					reg = <2>;
 					interrupts = <125>;
 					gpio-controller;
 					#gpio-cells = <2>;
@@ -192,6 +195,7 @@ gpio2: gpio@2 {
 
 				gpio3: gpio@3 {
 					compatible = "fsl,imx28-gpio", "fsl,mxs-gpio";
+					reg = <3>;
 					interrupts = <124>;
 					gpio-controller;
 					#gpio-cells = <2>;
@@ -201,6 +205,7 @@ gpio3: gpio@3 {
 
 				gpio4: gpio@4 {
 					compatible = "fsl,imx28-gpio", "fsl,mxs-gpio";
+					reg = <4>;
 					interrupts = <123>;
 					gpio-controller;
 					#gpio-cells = <2>;