ARM: dts: msm: Reduce Venus AB vote to match honest voting

This change reduces the Venus AB vote to match the bandwidth
requirement provided by system's team. This also makes Venus
bandwidth request in sync with honest voting.

Change-Id: I31a88e9e5f2bf5b9031b635f8d29f09f474da129
Signed-off-by: Praneeth Paladugu <ppaladug@codeaurora.org>