tuna: Fix sensors for KitKat+ in a more appropriate manner.

Change-Id: I13f3d62a4022b2c6796c101dc9a5024966485159
Signed-off-by: Kyle Repinski <repinski23@gmail.com>
tuna: Add ambient temperature sensor.

This leverages the BMP180's ability to sense the temperature.

Requires kernel change, but there are no adverse side-effects without the kernel change.

Change-Id: Ibe2228d0ab30775556acb0a034f7f0904ed1b0b7
Signed-off-by: Kyle Repinski <repinski23@gmail.com>