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/gmidi.c b/drivers/usb/gadget/gmidi.c
index 7da7fcb..5b42ccd 100644
--- a/drivers/usb/gadget/gmidi.c
+++ b/drivers/usb/gadget/gmidi.c
@@ -1158,7 +1158,7 @@
 	/* support optional vendor/distro customization */
 	if (idVendor) {
 		if (!idProduct) {
-			printk(KERN_ERR "idVendor needs idProduct!\n");
+			pr_err("idVendor needs idProduct!\n");
 			return -ENODEV;
 		}
 		device_desc.idVendor = cpu_to_le16(idVendor);
@@ -1190,7 +1190,7 @@
 	in_ep = usb_ep_autoconfig(gadget, &bulk_in_desc);
 	if (!in_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;
 	}
@@ -1212,7 +1212,7 @@
 		 * it SHOULD NOT have problems with bulk-capable hardware.
 		 * so warn about unrecognized controllers, don't panic.
 		 */
-		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);
 	}