10077 usr/src/uts/ Makefile changes for smatch

*** 10,19 ****
--- 10,20 ----
  #
  
  #
  # Copyright 2016 Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  #
  # This makefile drives the production of the iwn driver kernel module.
  #
  # intel architecture dependent
*** 53,62 ****
--- 54,66 ----
  ALL_TARGET      = $(BINARY) $(CONFMOD) $(ITUMOD)
  INSTALL_TARGET  = $(BINARY) $(ROOTMODULE) $(ROOTFIRMWARE)
  
  LDFLAGS         += -dy -Nmisc/mac -Nmisc/net80211 -Ndrv/random -Ndrv/ip
  
+ # needs work
+ SMOFF += all_func_returns
+ 
  #
  #       Default build targets.
  #
  .KEEP_STATE: