sepolicy: Fix rmtfs sysfs path for v5.18+ kernel versions am: 8c86e37636 am: 1a791715b8 am: 9bab0eb34d

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/2046643

Change-Id: I649ddf98c6b2965c567532e43d5e1da7178dc4c7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>