Revert "TEMPORARY: Remove context option from mount of /firmware"

This reverts commit bfc8b8d3bd7750935dc07875728930fc9573c83b.
victara; Add device specific sepolicy
Revert "victara: Set selinux=permissive for now"

This reverts commit 00bef912b134018b691c3aeb1eb46d59b2b559d9.