10077 usr/src/uts/ Makefile changes for smatch

*** 20,29 ****
--- 20,30 ----
  #
  #
  # Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  #
  # uts/intel/devfs/Makefile
  #       This makefile drives the production of the devfs file system
  #       kernel module.
*** 49,58 ****
--- 50,62 ----
  #
  include $(UTSBASE)/intel/Makefile.intel
  
  CERRWARN        += -_gcc=-Wno-parentheses
  
+ # needs work
+ $(OBJS_DIR)/devfs_vnops.o := SMOFF += signed
+ 
  #
  #       Define targets
  #
  ALL_TARGET      = $(BINARY)
  LINT_TARGET     = $(MODULE).lint