move remaining help text from include/usage.src.h

Signed-off-by: Pere Orga <gotrunks@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

util-linux/findfs.c

@@ -8,6 +8,14 @@
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
+//usage:#define findfs_trivial_usage
+//usage:       "LABEL=label or UUID=uuid"
+//usage:#define findfs_full_usage "\n\n"
+//usage:       "Find a filesystem device based on a label or UUID"
+//usage:
+//usage:#define findfs_example_usage
+//usage:       "$ findfs LABEL=MyDevice"
+
 #include "libbb.h"
 #include "volume_id.h"