lwis: dpm: pass the realtime total peak BW to BTS

The correct MIF operating level depends on the realtime
traffic. The camera driver should pass the total peak
realtime bandwidth vote to BTS so the realtime traffic
constraint can be enforced.

Test: GCA
Bug: 186663174
Bug: 187919945
Bug: 188492972
Bug: 188585399


Change-Id: Iac519fe93d1d7cdf56c970de2698c63aa951879e
Signed-off-by: Hossein Mohtasham <hmohtasham@google.com>