msm: camera: Improves logging infrastructure

Defines new macros
  CAM_INFO_RATE_LIMIT_CUSTOM
  CAM_ERR_RATE_LIMIT_CUSTOM
These macros ratelimits logs with provided interval and burst.

Function cam_sync_get_obj_ref is called from CAM_SYNC_SIGNAL ioctl. If
userspace frequently calls this function with invalid sync id, then error
log can cause excessive loging.
Ratelimit log  to 5 times in 1 second.

Change-Id: Id362f7b2025b7d6be88b054b0bacb4134b6a5952
Signed-off-by: Trishansh Bhardwaj <tbhardwa@codeaurora.org>