oppo-common: bringup for 5.0

depends on https://gerrit.omnirom.org/#/c/10483/

PS13:
-added camera2.portability.force_api=1

PS14:
-enhanced global action menu

PS15:
-the voip_rx mod in audio_policy is still needed

PS16:
-device sepolicy

PS17:
-continue sepolicy
-use new touchscreen gesture sysfs

PS19:
-add DeviceKeyHandler

PS20:
-flashlight gesture

Change-Id: I7797d6a74f894b76d302fea4bc8414e24df5d305