This change removes direct access to the LHBM sysfs node from SystemUI,
but allows SystemUI to make binder calls to the hardware composer (HWC),
which can be used to enable or disable LHBM.
Bug: 191132545
Bug: 190563896
Bug: 184768835
Test: no avc denials
Change-Id: I5417377ff096e869ad772e4fd2fb23f8c1fd4f1e
displaycolor service runs in HW Composer. This change allow displaycolor
to output to dumpstate via pipe fd.
Bug: 189846843
Test: adb bugreport and check displaycolor dump in dumpstate_board.txt
Change-Id: I109db9374124caf9053a9fd7ba6159f83c372038
Allow HWC to access vendor_log_file and also allow hwc to access
power hal
Bug: 181712799
Test: pts -m PtsSELinuxTest -t
com.google.android.selinux.pts.SELinuxTest#scanAvcDeniedLogRightAfterReboot
Change-Id: I403a528f651b9ee5755d11525f2a33c39628ecee