SystemUI: 4G/LTE icon toggle

Change-Id: I6736efa45ea46701c8db2d5f51dd2fced359e483
Signed-off-by: Roman Birg <romanbirg@gmail.com>
Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>
Merge remote branch 'aokp/kitkat' into kitkat