msm: camera: cpas: Improve logging capability

Currently the logs print only the cpas/bus client idx,
this change logs the name of the client as well which enhances
debugging capabilities.

Change-Id: I8c0cb23fc846a5b8f5801c78024d1c76559dc48e
Signed-off-by: Karthik Anantha Ram <kartanan@codeaurora.org>