Enable usb power pin by using a fixed regulator. With this and the usb clock
patch is making usb working on my loco.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Index: linux-next/arch/arm/boot/dts/imx53-qsb.dts
===================================================================
--- linux-next.orig/arch/arm/boot/dts/imx53-qsb.dts	2013-06-20 23:25:46.049428530 +0200
+++ linux-next/arch/arm/boot/dts/imx53-qsb.dts	2013-06-20 23:26:34.293425920 +0200
@@ -93,6 +93,15 @@
 			regulator-max-microvolt = <3200000>;
 			regulator-always-on;
 		};
+
+		reg_usbpwr: usbpwr {
+			compatible = "regulator-fixed";
+			regulator-name = "usbpwr";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio7 8 0>;
+			regulator-always-on;
+		};
 	};
 
 	sound {
@@ -145,6 +154,7 @@
 				MX53_PAD_EIM_DA12__GPIO3_12       0x80000000
 				MX53_PAD_EIM_DA13__GPIO3_13       0x80000000
 				MX53_PAD_PATA_DA_0__GPIO7_6       0x80000000
+				MX53_PAD_PATA_DA_2__GPIO7_8	  0x80000000
 				MX53_PAD_GPIO_16__GPIO7_11        0x80000000
 			>;
 		};