ARM: dts: imx28: Pass unit address and reg to IOMUX node

Pass unit address and reg to IOMUX node to fix the following build
warning with W=1:

arch/arm/boot/dts/imx28-apf28.dtb: Warning (simple_bus_reg): Node /apb@80000000/apbh@80000000/pinctrl@80018000/gpmi-status-cfg missing or empty reg/ranges property
arch/arm/boot/dts/imx28-apf28.dtb: Warning (simple_bus_reg): Node /apb@80000000/apbh@80000000/pinctrl@80018000/mmc0-cd-cfg missing or empty reg/ranges property
arch/arm/boot/dts/imx28-apf28.dtb: Warning (simple_bus_reg): Node /apb@80000000/apbh@80000000/pinctrl@80018000/mmc0-sck-cfg missing or empty reg/ranges property
arch/arm/boot/dts/imx28-apf28.dtb: Warning (simple_bus_reg): Node /apb@80000000/apbh@80000000/pinctrl@80018000/mmc1-cd-cfg missing or empty reg/ranges property
arch/arm/boot/dts/imx28-apf28.dtb: Warning (simple_bus_reg): Node /apb@80000000/apbh@80000000/pinctrl@80018000/mmc1-sck-cfg missing or empty reg/ranges property
arch/arm/boot/dts/imx28-apf28.dtb: Warning (simple_bus_reg): Node /apb@80000000/apbh@80000000/pinctrl@80018000/mmc2-cd-cfg missing or empty reg/ranges property
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx28.dtsi

@@ -283,7 +283,8 @@ MX28_PAD_GPMI_RESETN__GPMI_RESETN
 					fsl,pull-up = <MXS_PULL_DISABLE>;
 				};
 
-				gpmi_status_cfg: gpmi-status-cfg {
+				gpmi_status_cfg: gpmi-status-cfg@0 {
+					reg = <0>;
 					fsl,pinmux-ids = <
 						MX28_PAD_GPMI_RDN__GPMI_RDN
 						MX28_PAD_GPMI_WRN__GPMI_WRN
@@ -527,14 +528,16 @@ MX28_PAD_SSP0_SCK__SSP0_SCK
 					fsl,pull-up = <MXS_PULL_ENABLE>;
 				};
 
-				mmc0_cd_cfg: mmc0-cd-cfg {
+				mmc0_cd_cfg: mmc0-cd-cfg@0 {
+					reg = <0>;
 					fsl,pinmux-ids = <
 						MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT
 					>;
 					fsl,pull-up = <MXS_PULL_DISABLE>;
 				};
 
-				mmc0_sck_cfg: mmc0-sck-cfg {
+				mmc0_sck_cfg: mmc0-sck-cfg@0 {
+					reg = <0>;
 					fsl,pinmux-ids = <
 						MX28_PAD_SSP0_SCK__SSP0_SCK
 					>;
@@ -558,14 +561,16 @@ MX28_PAD_GPMI_WRN__SSP1_SCK
 					fsl,pull-up = <MXS_PULL_ENABLE>;
 				};
 
-				mmc1_cd_cfg: mmc1-cd-cfg {
+				mmc1_cd_cfg: mmc1-cd-cfg@0 {
+					reg = <0>;
 					fsl,pinmux-ids = <
 						MX28_PAD_GPMI_RDY0__SSP1_CARD_DETECT
 					>;
 					fsl,pull-up = <MXS_PULL_DISABLE>;
 				};
 
-				mmc1_sck_cfg: mmc1-sck-cfg {
+				mmc1_sck_cfg: mmc1-sck-cfg@0 {
+					reg = <0>;
 					fsl,pinmux-ids = <
 						MX28_PAD_GPMI_WRN__SSP1_SCK
 					>;
@@ -606,7 +611,8 @@ MX28_PAD_AUART1_RX__SSP2_CARD_DETECT
 					fsl,pull-up = <MXS_PULL_ENABLE>;
 				};
 
-				mmc2_cd_cfg: mmc2-cd-cfg {
+				mmc2_cd_cfg: mmc2-cd-cfg@0 {
+					reg = <0>;
 					fsl,pinmux-ids = <
 						MX28_PAD_AUART1_RX__SSP2_CARD_DETECT
 					>;