Add seccomp policy for riscv64 am: 2a488320af am: f9b5669b50

Original change: https://android-review.googlesource.com/c/platform/system/nvram/+/2252033

Change-Id: I4718ce8e63e1e955200a6b37a911db4f270d6e0c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>