ARM: dts: msm: Add camnoc-min-bw entry in cpas node for sm8150

This field determines the min camnoc axi bw needed based on the
target. Currently this value is defined as a macro, moving this
field to the device tree.

Change-Id: I66c086ac0dc0322aa95d0643467938f131fb7c80
Signed-off-by: Jigarkumar Zala <jzala@codeaurora.org>