[media] gspca: Remove gspca-specific debug magic

Instead use v4l2_dbg and v4l2_err. Note that the PDEBUG macro is kept to
make this patch-set less invasive, but it is simply a wrapper around
v4l2_dbg now. Most of the other changes are there to make the dev parameter
for the v4l2_xxx macros available everywhere we do logging.

Signed-off-by: Theodore Kilgore <kilgota@auburn.edu>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/usb/gspca/jeilinj.c

@@ -266,7 +266,7 @@ static int jlj_start(struct gspca_dev *gspca_dev)
 	msleep(2);
 	setfreq(gspca_dev, v4l2_ctrl_g_ctrl(sd->freq));
 	if (gspca_dev->usb_err < 0)
-		PDEBUG(D_ERR, "Start streaming command failed");
+		PERR("Start streaming command failed");
 	return gspca_dev->usb_err;
 }