drm/msm: reduce ib sleep vote to 400MBps

Current driver votes for 1.6GBps for sleep
vote. Reduce this vote to 400MBps as
per recommendation.

Change-Id: I9c98a3017057072ba8c09835be44dec478c76d79
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>
1 file changed