vts_fs_test: Only require EROFS in T+ kernels. am: aee8ddbc46 am: 0375a89f9a

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/19293151

Change-Id: If5813a6f87a33d0e597f43e1aaa873a419aa32d4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>