RM6785: Build stub mtkpower service

* It seems even  after adding a dummy libmtkperf_client library,
  camera still refuses to work, it seems MediaTek have used a
  mix of that client library, and direct HIDL calls to the power
  implementation. Build a stub mtkpower service to get around
  this limitation.

* https://github.com/mt6768-dev/vendor_mediatek_opensource_interfaces/tree/17ddcd53b8b276454c86c5296f1895ab59800a10/mtkpower/1.2

Signed-off-by: bengris32 <bengris32@protonmail.ch>
Change-Id: Iea5c8711ba1d71377c840112dff94813a79bbec4
3 files changed