Merge the TV Emulator with GSI and add AOSP emulator.

Follow mobile, the aosp_xxxx.mk is for GSI image. It has GSI system and
emulator vendor. The emulator target will use those GSI targets after
this change.

This change also replaces SDKSetup with TvProvision for TV and removes
unused AOSP ATV emulators.

BUG: 148689180
Test: Build and run the emulator.
Change-Id: I6ae791bf1eaec36445f011ae348f5adbe39064eb
(cherry picked from commit d895a84922a883e66aad0261c5a561b0986fe49e)
12 files changed