[media] gl860: Use current logging styles

Add pr_fmt.
Convert err macro use to pr_err.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/gspca/gl860/gl860.c

@@ -18,6 +18,9 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include "gspca.h"
 #include "gl860.h"
 
@@ -572,9 +575,8 @@ int gl860_RTx(struct gspca_dev *gspca_dev,
 	}
 
 	if (r < 0)
-		err("ctrl transfer failed %4d "
-			"[p%02x r%d v%04x i%04x len%d]",
-			r, pref, req, val, index, len);
+		pr_err("ctrl transfer failed %4d [p%02x r%d v%04x i%04x len%d]\n",
+		       r, pref, req, val, index, len);
 	else if (len > 1 && r < len)
 		PDEBUG(D_ERR, "short ctrl transfer %d/%d", r, len);