USB: include/usb/*.h checkpatch cleanup

Lots of minor formatting cleanups in includes/usb/ to make checkpatch
happier.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index db6141c..d3ef42d 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -500,7 +500,7 @@
 }
 
 /* iterates the non-control endpoints; 'tmp' is a struct usb_ep pointer */
-#define gadget_for_each_ep(tmp,gadget) \
+#define gadget_for_each_ep(tmp, gadget) \
 	list_for_each_entry(tmp, &(gadget)->ep_list, ep_list)