10077 usr/src/uts/ Makefile changes for smatch

*** 20,29 ****
--- 20,30 ----
  #
  #
  # Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  #
  #       This file makes the atheros driver for an intel system
  #
  #       intel architecture dependent
*** 64,73 ****
--- 65,77 ----
  
  CERRWARN        += -_gcc=-Wno-type-limits
  CERRWARN        += -_gcc=-Wno-unused-variable
  CERRWARN        += -_gcc=-Wno-empty-body
  
+ # needs work
+ $(OBJS_DIR)/ath_rate.o := SMOFF += index_overflow
+ 
  #
  #       Default build targets.
  #
  .KEEP_STATE: