10077 usr/src/uts/ Makefile changes for smatch

*** 22,34 ****
  # uts/intel/pcieb/Makefile
  #
  # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
! #       This makefile drives the production of the pcieb driver kernel
! #       module.
! #
  
  #
  #       Path to the base of the uts directory tree (usually /usr/src/uts).
  #
  UTSBASE = ../..
--- 22,32 ----
  # uts/intel/pcieb/Makefile
  #
  # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
! # Copyright (c) 2018, Joyent, Inc.
  
  #
  #       Path to the base of the uts directory tree (usually /usr/src/uts).
  #
  UTSBASE = ../..
*** 75,84 ****
--- 73,85 ----
  LINTTAGS        += -erroff=E_PTRDIFF_OVERFLOW
  LINTTAGS        += -erroff=E_ASSIGN_NARROW_CONV
  
  CERRWARN        += -_gcc=-Wno-unused-value
  
+ # needs work
+ SMOFF += all_func_returns
+ 
  #
  #       Default build targets.
  #
  .KEEP_STATE: