10077 usr/src/uts/ Makefile changes for smatch

*** 1,10 ****
  #
  # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
! # Copyright 2016 Joyent, Inc.
  #
  #
  #       This makefile drives the production of the ACPI CA services
  #       kernel module.
  #
--- 1,10 ----
  #
  # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
! # Copyright (c) 2018, Joyent, Inc.
  #
  #
  #       This makefile drives the production of the ACPI CA services
  #       kernel module.
  #
*** 52,61 ****
--- 52,63 ----
  #
  # 3rd party code is not lint clean
  #
  CERRWARN += -erroff=E_STATEMENT_NOT_REACHED
  
+ SMOFF += all_func_returns
+ 
  LINTFLAGS += -errchk=%none
  LINTFLAGS += -errhdr=%none
  LINTFLAGS += -erroff=%all
  LINTFLAGS += -errwarn=%none