gs101: Allow BootControl to access sysfs blow_ar am: f276625942

Original change: https://googleplex-android-review.googlesource.com/c/device/google/gs101-sepolicy/+/18740593

Change-Id: Ieaa6dc6037b95a3a9010712b827dac316ad4e1e3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>