Fixing Android Net Test compilation

Reverting the below commits resolve the compilation error. The below
abandoned commits from upstream were pushed in to the QC kernel
repository which is causing Android Kernel Net Tests to fail.

"ANDROID: mm: fix filler function type mismatch" commit
"ANDROID: fs: fuse: fix filler function type mismatch" commit.

Change-Id: Id6da458fa838d741f4de234d61b6e39116dc186c
Signed-off-by: Arnav Sharma <arnav_s@codeaurora.org>