ARM: dts: imx28: move extra gpmi-nand pins into board dts

Only pins GPMI_CE0N and GPMI_READY0 are generally used by other boards.
Move GPMI_CE1N and GPMI_READY1 into imx28-evk.dts to make gpmi_pins_a
more general, and can be used by other boards.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/boot/dts/imx28-evk.dts b/arch/arm/boot/dts/imx28-evk.dts
index 0d8739d..0444964 100644
--- a/arch/arm/boot/dts/imx28-evk.dts
+++ b/arch/arm/boot/dts/imx28-evk.dts
@@ -24,7 +24,8 @@
 		apbh@80000000 {
 			gpmi-nand@8000c000 {
 				pinctrl-names = "default";
-				pinctrl-0 = <&gpmi_pins_a &gpmi_status_cfg>;
+				pinctrl-0 = <&gpmi_pins_a &gpmi_status_cfg
+					     &gpmi_pins_evk>;
 				status = "okay";
 			};
 
@@ -64,6 +65,17 @@
 					fsl,voltage = <1>;
 					fsl,pull-up = <0>;
 				};
+
+				gpmi_pins_evk: gpmi-nand-evk@0 {
+					reg = <0>;
+					fsl,pinmux-ids = <
+						0x0110 /* MX28_PAD_GPMI_CE1N__GPMI_CE1N */
+						0x0150 /* MX28_PAD_GPMI_RDY1__GPMI_READY1 */
+					>;
+					fsl,drive-strength = <0>;
+					fsl,voltage = <1>;
+					fsl,pull-up = <0>;
+				};
 			};
 
 			lcdif@80030000 {