Extend SEPolicy

Change-Id: I292134d5b4069aee20fafc73a30de8a3102e2dce
Fill out some qcom related build flags

Change-Id: I48ce8c84fa904624c9d9476df5b16ebdac06c71e
Specify twrp RECOVERY_VARIANT

Change-Id: Ibc83e185fdef4806fb57f2a13d1dd097bfc04e2d