Update changelog for M7

...and M6 and M5...

Change-Id: I5f900e6e4ab4807491dbd783f69caae9792b3ab1
Add KT/SKT spn value

Change-Id: I461eaa31d84fc1f494839aad591564d9875aefed
Add more audio files

Change-Id: I10d5bcd0c2a46e16438c3a46d94d8ac596a71e1a
Add HALO to the build

Change-Id: Id7646cf6b7aee6cda14bcd5de232d8a38c6fd924
Remove CMUpdater from the build

Change-Id: Ic71bc2360605bda4c9f55eed80c39d2801750692
Enable gesture typing - (2/3) - add prebuilt lib

Change-Id: Ia8d90975c4aa842269f2f3fcd1b8decf90a48b47
Include gapps

Change-Id: I56a03d8eb5b1732c18c836a6701aa962fb3d6089
Set permissions on sched_mc_power_savings node

Change-Id: I75edd69fa1c76a40cf142bcba86d398e855ba3e8
Build TRDS Theme

Change-Id: I569b353bcd22665d4925fdc68a1907cc0681dade