Add permissions for read maxfg debugfs am: 03c6806df9 am: e74bb8aa68 am: da7ec50ce6 am: 2551e52dff

Original change: https://googleplex-android-review.googlesource.com/c/device/google/gs101-sepolicy/+/23577705

Change-Id: If5442c4db9f83cd567610aef87e0aca0fb516719
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>