Add permissions for read maxfg debugfs am: 03c6806df9 am: e74bb8aa68 am: 76a7443057 am: 7352e7bb9d

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

Change-Id: I49b38ae18c2406c4a8a47ba0c2a7e0950a005c95
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>