USB: gadget code switches to pr_err() and friends

We now have pr_err(), pr_warning(), and friends ... start using
them in the gadget stack instead of printk(KERN_ERR) and friends.
This gives us shorter lines and somewhat increased readability.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
index fcde5d9..d3d4f40 100644
--- a/drivers/usb/gadget/zero.c
+++ b/drivers/usb/gadget/zero.c
@@ -1115,7 +1115,7 @@
 	ep = usb_ep_autoconfig (gadget, &fs_source_desc);
 	if (!ep) {
 autoconf_fail:
-		printk (KERN_ERR "%s: can't autoconfigure on %s\n",
+		pr_err("%s: can't autoconfigure on %s\n",
 			shortname, gadget->name);
 		return -ENODEV;
 	}
@@ -1139,7 +1139,7 @@
 		 * things like configuration and altsetting numbering
 		 * can need hardware-specific attention though.
 		 */
-		printk (KERN_WARNING "%s: controller '%s' not recognized\n",
+		pr_warning("%s: controller '%s' not recognized\n",
 			shortname, gadget->name);
 		device_desc.bcdDevice = __constant_cpu_to_le16 (0x9999);
 	}