Game Driver: make GpuService the GpuStats holder

Move IGpuService to graphicsenv to avoid dependency circle. Add ATRACE
to GraphicsEnv. Implement the prototype SET_GPU_STATS IPC to collect
GpuStats from applications.

Bug: 123529932
Test: Build, flash and boot.
Change-Id: I7d76324c5adb6ad00f1e5420ab2c7f4067f33253
10 files changed