Revert "ANDROID: sdcardfs: fault and page_mkwrite take only vmf"

This reverts commit ab8e3036.
Revert for the sake of simplifying merge process.

Change-Id: I07d3f9964598d6c0166c172894d7f900a0b97ff3
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>