opcodes: d10v: fix old style prototype

opcodes/ChangeLog

@@ -1,3 +1,7 @@
+2015-03-30  Mike Frysinger  <vapier@gentoo.org>
+
+	* d10v-opc.c (d10v_reg_name_cnt): Convert old style prototype.
+
 2015-03-29  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* Makefile.in: Regenerated.

opcodes/d10v-opc.c

@@ -90,7 +90,7 @@ const struct pd_reg d10v_predefined_registers[] =
 };
 
 int 
-d10v_reg_name_cnt()
+d10v_reg_name_cnt (void)
 {
   return (sizeof(d10v_predefined_registers) / sizeof(struct pd_reg));
 }