ARM: dts: msm: Disable dynamic clock gating for vig0 and ahb clocks

MDP device on apq8084 requires internal vig0 and ahb clocks to be
enabled for functioning of other pipes. To keep these clocks enabled,
configure them for force on.

Change-Id: I0928dab8129d4d73ac8c85b619c6144707bebd17
Signed-off-by: Ujwal Patel <ujwalp@codeaurora.org>