sunxi: Hyundai_A7HD_defconfig fix USB vbus pin config

USB1_VBUS is not used, and USB2_VBUS uses the pin normally used to control
USB1_VBUS.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>

configs/Hyundai_A7HD_defconfig

@@ -6,7 +6,8 @@ CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER"
 CONFIG_FDTFILE="sun4i-a10-hyundai-a7hd.dtb"
 CONFIG_USB_MUSB_SUNXI=y
 CONFIG_USB0_VBUS_PIN="PB09"
-CONFIG_USB2_VBUS_PIN=""
+CONFIG_USB1_VBUS_PIN=""
+CONFIG_USB2_VBUS_PIN="PH6"
 CONFIG_VIDEO_LCD_MODE="x:1024,y:600,depth:18,pclk_khz:51000,le:45,ri:274,up:22,lo:12,hs:1,vs:1,sync:3,vmode:0"
 CONFIG_VIDEO_LCD_DCLK_PHASE=1
 CONFIG_VIDEO_LCD_POWER="PH2"