sim: sim_{create_inferior,open,parse_args}: constify argv/env slightly

2016-01-03  Mike Frysinger  <vapier@gentoo.org>

	* sim-options.c (sim_parse_args): Mark argv array const.
	* sim-options.h (sim_parse_args): Likewise.

sim/arm/wrapper.c

@@ -229,8 +229,8 @@ sim_resume (SIM_DESC sd ATTRIBUTE_UNUSED,
 SIM_RC
 sim_create_inferior (SIM_DESC sd ATTRIBUTE_UNUSED,
 		     struct bfd * abfd,
-		     char ** argv,
-		     char ** env)
+		     char * const *argv,
+		     char * const *env)
 {
   int argvlen = 0;
   int mach;
@@ -800,7 +800,7 @@ SIM_DESC
 sim_open (SIM_OPEN_KIND kind,
 	  host_callback *cb,
 	  struct bfd *abfd,
-	  char **argv)
+	  char * const *argv)
 {
   int i;
   SIM_DESC sd = sim_state_alloc (kind, cb);