msm: camera: Add statistics support for concurrent ISP

For image statatistics for concurrent ISP, we
collect statistics for a single camera sensor from
two ISP hardware. A single buffer is passed from userspace
and share between two ISP hardware using different buffer
offset. When both hardware are done with the buffer,
a stats done event will be send to userspace.

Change-Id: Ia129fbfc082c8d348db0d2765dddeb8d442c931f
Signed-off-by: Kevin Chan <ktchan@codeaurora.org>
3 files changed