vts_fs_test: Only require EROFS in T+ kernels. am: aee8ddbc46 am: 0375a89f9a am: c134d822c5

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

Change-Id: Ieb67be49ae75dbec728417916f0f7f26001df94b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>