Merge "Revert "selftests: binderfs skip when syscall unavailable"" am: 58e9ca256a am: a1f8a8b9c0

Original change: https://android-review.googlesource.com/c/platform/external/linux-kselftest/+/2043252

Change-Id: I889ce087da772d8155adf0312541a9efe6b33988
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>