media: staging: media: zoran: replace dprintk with new debugging macros

This replaces all of the dprintk macro calls with the zrdev_dbg,
zrdev_info, or zrdev_err calls as appropriate. This allows for the
removal of the dprintk macro from each file it is defined in, along with
the removal of module params that track the debugging level.

In the case that the debugging level was used in a comparison, this has
been replaced with checking the console level debugging and making a
decision from there. If the console debugging level is at least the
KERN_ debugging level equivalent, then the comparison will evaluate as
true.

There are a few instances where pr_debug must be used over the
zrdev_dbg. These occur in the module cleanup functions because there
should be no devices defined once we get here, so we don't have a device
to pass to zrdev_dbg.

Signed-off-by: Ian Cowan <ian@linux.cowan.aero>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>