tuna: sensors: update twl adc calls

Update call to twl adc in new kernel

Signed-off-by: Israel Cepeda <israel4c@gmail.com>
Initial checkin of the invensense gyroscope driver

Supports MPU3050 only
Slave devices are in a seperate commit.

Change-Id: I5a2381bdd7c625351f134b5b8ac3d813218ad800
Signed-off-by: Nathan Royer <nroyer@invensense.com>