drm/msm/sde: remove 'mdp' from sde file names

The previous 'mdp' prefix is no longer applicable to
the new sde hardware.

Change-Id: I6981268e1b86201b45cd1816d48d2be9d80c02b6
Signed-off-by: Clarence Ip <cip@codeaurora.org>
25 files changed