m7-common: show LTE icon instead of 4G

Change-Id: I648f94cafb85026e8b242a04ff4f6ac12d2a934e
m7-common: remove deprecated overlay options

Change-Id: I2158f9ec378f3faceee05aa982984f547d480cc6
Merge remote-tracking branch 'upstream/cm-10.2' into cm-10.2