USB OTG HOST

Usb otg enabled. Works with usb mouse. Usb storage doesn't work yet.
Requires external power supply
Rollback CONFIG_USB_GADGET_VBUS_DRAW
Enabled drivers for USB serial connection (Arduino)
Test for USB HOST mode for Storage devices by engelmarkus

http://forum.xda-developers.com/showpost.php?p=36718041&postcount=9