drm/msm/sde: turn on mdp clock before rsc mode_2 exit

Input touch event handler was turning on sde_rsc
clocks followed by mdss core gdsc without turning on
mdp clock. This sequence may cause the link clock
on failure. Input touch event must also follow the
pre_kickoff sequence due to mmcx dependency.

Change-Id: I35540f07db3c83a76bccbd6247333aa1ec655c17
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>