Fix frv-elf sim, default hardware to off.

At 2974be626, frv-elf fails at the dv_sockser_install declaration in
sim/frv/tconfig.in.  But, with the trivial #include's added (see other
sims tconfig.in, like cris or mn10300), it *still* fails building
sim/frv/devices.c because of a missing UART_INCHAR_ADDR.  I have no
insight into what'd be a valid value, except that there's a definition
in m32r, which was probably used as a template with frv not finished.
Simulated hardware should not have been be enabled, and was indeed not
enabled by default before 94c63d78f (2013-03-23), where it seems to
have been enabled for no simulator-specific reason.  Except
dv-sockser.o wasn't enabled even then: sim/frv/config.in wasn't
regenerated, so HAVE_DV_SOCKSER was never defined.  Maybe people were
fooled by this in sim/frv/Makefile.in at that time (these two lines
were later deleted, in 73e76d20):
CONFIG_DEVICES = dv-sockser.o
CONFIG_DEVICES =
(As it seems people have missed it before: the second line overrides
the first...)  I'm guessing these lines were part of the
never-completed hardware-support.  Commit 73e76d20 attempted to move
the imagined dv-sockser.o from $(CONFIG_DEVICES) to $(frv_extra_objs)
but missed that AC_SUBST would only affect @frv_extra_objs@ (not
$(frv_extra_objs) per se) so nothing happened regarding sockser:
dv-sockser.o was not compiled and HAVE_DV_SOCKSER was not defined.
I'm removing the $(frv_extra_objs) too, to avoid confusion.  The best
action seems to be disabling all hardware support by default again
until a specific sim maintainer finishes the work.
Make check-sim for frv-elf shows no failures after this.

sim/frv:
	* configure.ac: Default simulator hardware to off again.  Remove
	dead frv_extra_objs substitution.
	* configure: Regenerate.
	* Makefile.in: Remove unused frv_extra_objs.

sim/frv/ChangeLog

@@ -1,3 +1,10 @@
+2014-08-23  Hans-Peter Nilsson  <hp@axis.com>
+
+	* configure.ac: Default simulator hardware to off again.  Remove
+	dead frv_extra_objs substitution.
+	* configure: Regenerate.
+	* Makefile.in: Remove unused frv_extra_objs.
+
 2014-08-19  Alan Modra  <amodra@gmail.com>
 
 	* configure: Regenerate.

sim/frv/Makefile.in

@@ -32,8 +32,7 @@ SIM_OBJS = \
 	$(FRV_OBJS) \
 	traps.o interrupts.o memory.o cache.o pipeline.o \
 	profile.o profile-fr400.o profile-fr450.o profile-fr500.o profile-fr550.o options.o \
-	devices.o reset.o registers.o \
-	$(frv_extra_objs)
+	devices.o reset.o registers.o
 
 # Extra headers included by sim-main.h.
 SIM_EXTRA_DEPS = \

sim/frv/configure

@@ -601,7 +601,6 @@ ac_includes_default="\
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
 cgen_breaks
-frv_extra_objs
 SIM_DV_SOCKSER_O
 sim_trapdump
 cgen
@@ -12377,7 +12376,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12380 "configure"
+#line 12379 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12483,7 +12482,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12486 "configure"
+#line 12485 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13421,7 +13420,7 @@ fi
 
 
 
-if test x"always" != x"no"; then
+if test x"no" != x"no"; then
   enable_sim_hardware=yes
 else
   enable_sim_hardware=no
@@ -13452,7 +13451,7 @@ case ${enable_sim_hardware} in
 esac
 
 if test "$sim_hw_p" != yes; then
-  if test "always" = "always"; then
+  if test "no" = "always"; then
     as_fn_error "Sorry, but this simulator requires that hardware support
 be enabled. Please configure without --disable-hw-support." "$LINENO" 5
   fi
@@ -13535,8 +13534,6 @@ fi
   esac
 fi
 
-frv_extra_objs="$SIM_DV_SOCKSER_O"
-
 
 
 ac_sources="$sim_link_files"

sim/frv/configure.ac

@@ -28,8 +28,6 @@ if test x"$silent" != x"yes" && test x"$sim_trapdump" != x""; then
 fi],[sim_trapdump=""])dnl
 AC_SUBST(sim_trapdump)
 
-SIM_AC_OPTION_HARDWARE(always,"","")
-frv_extra_objs="$SIM_DV_SOCKSER_O"
-AC_SUBST(frv_extra_objs)
+SIM_AC_OPTION_HARDWARE(no,"","")
 
 SIM_AC_OUTPUT