... to move external/gfxstream-protocols to hardware/google/gfxstream.

Bug: b/271464937
Test: lunch aosp_cf_x86_64_phone-userdebug && m
Test: cd <emu-master-dev repo>/external/qemu &&
      python android/build/python/cmake.py --gfxstream
Change-Id: Ic18e25f33efb753a1d66147c6c36f7b3aebb3f31