staging: comedi: usbduxfast: convert pr_err() to dev_err()

Use dev_err() to output the error message and remove the unnecessary
pr_fmt() macro.

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>

diff --cc drivers/staging/comedi/drivers/usbduxfast.c
Simple merge