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

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

Change-Id: I35e0117d296d24ebdd5384365e1fc48b61584c51
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>