Add permissions for using PlatformCompat methods

READ_COMPAT_CHANGE_CONFIG is required to read the current state of the
config, and OVERRIDE_COMPAT_CHANGE_CONFIG is required to add overrides.

Bug: 142650523
Test: atest PlatformCompatTest

Change-Id: I1c8cbb656e065a3273518e4cc2f4cc704c58f69f
5 files changed