Merge "libmemifo: x86_64: 16K: No-op PFN APIs" into main am: e8094cec6d

Original change: https://android-review.googlesource.com/c/platform/system/memory/libmeminfo/+/3472596

Change-Id: I0021c985a9a6a22aff1d61c8fb4393c6ea1ce441
Signed-off-by: Automerger Merge Worker <[email protected]>