[automerger skipped] Added HIDL based software implementation of gatekeeper
am: b1d2df1e -s ours
am skip reason: change_id I632aeb6677640c133ec1b79e72568840adbc0550 with SHA1 09f25f62 is in history
Change-Id: Ifa603da5280e3d78992386075809d106d9961e6a