media: camss: Replace trace_printk() with dev_dbg()

trace_printk() should not be used in production code,
since extra memory is used for special buffers whenever
trace_puts() is used.

Replace it with dev_dbg() which provides all of the desired
debugging functionality.

Signed-off-by: Robert Foss <robert.foss@linaro.org>
Suggested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>