ARM: dts: msm: Change bus governor for vidc for sdm845

Change bus governor mode from "performance" to newly enhanced
"msm-vidc-ddr". This governor makes use of run-time statistics
for better bus bandwidth voting.

CRs-Fixed: 2012520
Change-Id: Ie2cf77acde7bd6799ddd1cade3a5c8ef38ef0f0c
Signed-off-by: Praneeth Paladugu <ppaladug@codeaurora.org>