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/quirks.h b/include/linux/usb/quirks.h
index 1f999ec..7f6c603 100644
--- a/include/linux/usb/quirks.h
+++ b/include/linux/usb/quirks.h
@@ -4,6 +4,9 @@
  * belong here.
  */
 
+#ifndef __LINUX_USB_QUIRKS_H
+#define __LINUX_USB_QUIRKS_H
+
 /* string descriptors must not be fetched using a 255-byte read */
 #define USB_QUIRK_STRING_FETCH_255	0x00000001
 
@@ -12,3 +15,5 @@
 
 /* device can't handle Set-Interface requests */
 #define USB_QUIRK_NO_SET_INTF		0x00000004
+
+#endif /* __LINUX_USB_QUIRKS_H */