USB: Standardize inclusion protection and add where missing.

For the header files in include/linux/usb, add missing multiple
inclusion protection and standardize what's already there.  The
apparent standards:

  * macro name of __LINUX_USB_headerfile_H
  * inclusion protection placed after leading comment block
  * macro name added as a comment on the final #endif
  * any obvious trivial whitespace cleanup associated with the above

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h
index e0501da..ba09fe8 100644
--- a/include/linux/usb/usbnet.h
+++ b/include/linux/usb/usbnet.h
@@ -19,10 +19,8 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-
-#ifndef	__USBNET_H
-#define	__USBNET_H
-
+#ifndef	__LINUX_USB_USBNET_H
+#define	__LINUX_USB_USBNET_H
 
 /* interface from usbnet core to each USB networking link we handle */
 struct usbnet {
@@ -211,4 +209,4 @@
 	printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
 
 
-#endif	/* __USBNET_H */
+#endif /* __LINUX_USB_USBNET_H */