manifest: we no longer need changes in these sources:

    device/common
    external/genext2fs

Change-Id: I628c365233e924580f422a5d2a20526dd260e07c
Re-add CM's Power hal
Add back qcom_gps repo from caf
track our own Camera2

Change-Id: I6598fc7f7ee1f29a8ff3b8eeb7f812081f875d5c
Merge remote-tracking branch 'Slim/kk4.4' into slim4.4