ANDROID: TRACE: mm: export mm_filemap_* for calling in ko

In certain scenarios, we want to track the file names associated with
file pages in user version. So we want to export this tracepoint for
calling in ko.

Bug: 327557147
Bug: 336912811
Bug: 336946548

Change-Id: I6b9a81a4ebe1f582fdc4b3967c590f5ba450d61e
Signed-off-by: dongliang.cui <dongliang.cui@unisoc.com>
(cherry picked from commit Ide181d4737a1b6479bbe1f69f5abc8eb2d842742)