ARM: ux500: Configure regulator for I/O voltage for SD-card slot

To be able to enable SDR12|25 for SD-cards, we needed to fixup the
configuration in DT of the gpio regulator, which handles the signal
voltage level. Some configuration were missing and some were wrong.

Cc: Lee Jones <lee.jones@linaro.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/boot/dts/ste-snowball.dts b/arch/arm/boot/dts/ste-snowball.dts
index 9070c37..97d5d21 100644
--- a/arch/arm/boot/dts/ste-snowball.dts
+++ b/arch/arm/boot/dts/ste-snowball.dts
@@ -146,10 +146,8 @@
 		};
 
 		vmmci: regulator-gpio {
-			gpios = <&gpio6 25 0x4>;
-			enable-gpio = <&gpio7 4 0x4>;
-
-			status = "okay";
+			gpios = <&gpio7 4 0x4>;
+			enable-gpio = <&gpio6 25 0x4>;
 		};
 
 		// External Micro SD slot