tf101: add initial support

Created by: rrooij

Initial support for the TF101.

Boots into Weston, but doesn't support USB Networking.

Status:

• Boots into Weston
• Screen colors are fine
• Flashing with normal tools does not work, flashing needs to be done with dd inside recovery (see the wiki entry for this device)
• USB networking does not work, neither seems touch screen to be working. It doesn't freeze after loading Weston though, since the device is able to go in standby and be waked up (although the Weston lock screen can't be unlocked since touch does not seem to be working)