Add seal if ashmem-dev is backed by memfd am: 61a28977 am: 7878e7c9 am:...

Add seal if ashmem-dev is backed by memfd am: 61a28977 am: 7878e7c9 am: fb73f178 am: 170c1332 am: 72add754 am: 87675df8 am: 4281014b am: 796996fa am: 3046d6ae

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/24776869



Change-Id: Idf3c3f3212e9bf806fd718b1bad6117f8df57a13
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>