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/board/eltec/bab7xx/bab7xx.c b/board/eltec/bab7xx/bab7xx.c
index f5c9777..ea4897b 100644
--- a/board/eltec/bab7xx/bab7xx.c
+++ b/board/eltec/bab7xx/bab7xx.c
@@ -184,7 +184,7 @@
  * do_reset is done here because in this case it is board specific, since the
  * 7xx CPUs can only be reset by external HW (the RTC in this case).
  */
-void do_reset (cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char * const argv[])
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 #if defined(CONFIG_RTC_MK48T59)
 	/* trigger watchdog immediately */
@@ -192,6 +192,7 @@
 #else
 #error "You must define the macro CONFIG_RTC_MK48T59."
 #endif
+	return 0;
 }
 
 /* ------------------------------------------------------------------------- */