Allow system server to communicate with GPU service.

Currently system server also has a GPU service. We use that to observe
updatable driver package changes, in order to communciate that
information down to the GPU service, this patch allows system server to
make binder call.

Bug: b/157832445, b/159240322
Test: adb shell dumpsys gpu
Change-Id: I9c32c690707e24a5cfbdfdc62feeea9705321f5b
2 files changed