msm: camera: isp: Move delta info to sof_info structure

delta_info and output_info are both structures in a union that
are piggybacked to SOF event. Combine them so we can send all the info.
Add additional comments to the header files. Move the dual_vfe_res
to common_data as it is also shared resource between 2 VFE.

Change-Id: I6289625336fe4486508c2d32fb42bbd55214b941
Signed-off-by: Harsh Shah <harshs@codeaurora.org>