staging: comedi: comedi_bond: remove private printk macros

Remove the macros LOG_MSG, DEBUG, WARNING, and ERROR. Convert
the printk's into dev_printk format.

The DEBUG macro is not being used in the file so the module
parameter 'debug' can also be removed.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>