ANDROID: Add vendor hooks for FUSE tmpfile support

ARC requires FUSE to have O_TMPFILE support to pass certain CTS tests.
The upstream implementation breaks the KMI in android13-5.15. Add
hooks to allow FUSE tmpfiles to created with an alternate
implementation.

android_rvh_tmpfile_create and android_rvh_tmpfile_handle_op are both
declared as restricted vendor hooks because they call into
fuse_simple_request, which blocks.

Bug: 323975715

Change-Id: I3ef7697e0eae4c88b75c3df6dd77606ec860e83b
Signed-off-by: Tiffany Yang <ynaffit@google.com>