u8800: Initial MR1 bringup.

This is Work-In-Progress.
u8800: Fix data.

There seems to be an issue with the data connection sometimes. To fix
it, simply keep rmnet0 as the interface.
u8800: Initial list of hardware-specific features.

This list will be updated when new feature is added into the ROM.
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1