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/inode.c b/drivers/usb/gadget/inode.c
index 47ef8bd..805602a 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -1699,7 +1699,7 @@
 	if (!dev)
 		return -ESRCH;
 	if (0 != strcmp (CHIP, gadget->name)) {
-		printk (KERN_ERR "%s expected %s controller not %s\n",
+		pr_err("%s expected %s controller not %s\n",
 			shortname, CHIP, gadget->name);
 		return -ENODEV;
 	}