ARM: dts: imx51-eukrea-mbimxsd51-baseboard: unbreak esdhc.

The following commit:
89d7e5c1 mmc: sdhci-esdhc-imx: add runtime pm support
has the effect of also disabling the hardware card detect
in runtime pm.

We switch to GPIO based detection to avoid this issue.

This patch is based on:
ARM: dts: imx51-babbage: Fix esdhc setup
Signed-off-by: Denis Carikli <denis@eukrea.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts

@@ -107,7 +107,7 @@ &audmux {
 &esdhc1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_esdhc1 &pinctrl_esdhc1_cd>;
-	fsl,cd-controller;
+	cd-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>;
 	status = "okay";
 };
 
@@ -206,7 +206,7 @@ MX51_PAD_DI1_D1_CS__GPIO3_4 0x1f5
 
 		pinctrl_esdhc1_cd: esdhc1_cd {
 			fsl,pins = <
-				MX51_PAD_GPIO1_0__SD1_CD 0x20d5
+				MX51_PAD_GPIO1_0__GPIO1_0 0xd5
 			>;
 		};