mdss: msm: add mmagic ahb clock vote for mdp

mmagic ahb clock vote is handled through bus driver
on thulium target. Any module which uses AHB clock
has to add its vote on mmagic ahb clock. This
change adds this vote for MDP, DSI, SMMU and
HDMI modules.

Change-Id: Ibd8d7e7396f26dc13a0b7700c01c3d3dba839ae4
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>