Staging: w35und: Use pr_debug() for debugging

Use pr_debug() for debugging printk's and kill the FULL_DEBUG macro. It would
be even better to use dev_dbg() but unfortunately looking up struct device in
the current code structure makes things very ugly.

Please note that I dropped the DataDmp() calls from
RFSynthesizer_SwitchingChannel() because that function doesn't exist.

Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>