do_reset: unify duplicate prototypes

The duplication of the do_reset prototype has gotten out of hand,
and they're not all in sync.  Unify them all in command.h.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/command.h b/include/command.h
index e98332e..f5091d0 100644
--- a/include/command.h
+++ b/include/command.h
@@ -99,6 +99,7 @@
 extern int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 #endif
 extern int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
+extern int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 
 #endif	/* __ASSEMBLY__ */