ANDROID: sdcardfs: Use lower getattr times/size

We now use the lower filesystem's getattr for time and size related
information.

Change-Id: I3dd05614a0c2837a13eeb033444fbdf070ddce2a
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 72007585
Git-Commit: 4325c9c3
Git-Repo: https://android.googlesource.com/kernel/common/


Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>