msm: camera: cpas: Have minimum bw value for camnoc votes

To make sure axi clock speed is in minsvs while camera
is running, vote minimum of 800MB on camonc bus paths
for ib bw value.

Change-Id: I6607405fd75ae41e0181c8220a2e865d24d5d679
Signed-off-by: vhajeri <vhajeri@codeaurora.org>