msm: vidc: Remove devfreq module from video

Bus bandwidth voting can be achieved by directly call
the bus apis. DevFreq functionality is not utilized nor
necessary. Also, video bus bandwidth votes are dynamic
and cannot conform to the OPP table entries.

CRs-Fixed: 2384822
Change-Id: Ib83f51d7d07efe24a256e0287433e7a28e2ae057
Signed-off-by: Chinmay Sawarkar <chinmays@codeaurora.org>
Signed-off-by: Vikash Garodia <vgarodia@codeaurora.org>