sim: mn10300: move arch-specific file compilation to top-level

The arch-specific compiler flags are duplicated, but they'll be cleaned
up once we move all subdir compiles to the top-level.
diff --git a/sim/Makefile.in b/sim/Makefile.in
index d26c8eb..90f1449 100644
--- a/sim/Makefile.in
+++ b/sim/Makefile.in
@@ -2684,6 +2684,10 @@
 @SIM_ENABLE_ARCH_mips_TRUE@mips_M16_DC = $(srcdir)/mips/m16.dc
 @SIM_ENABLE_ARCH_mips_TRUE@mips_MICROMIPS32_DC = $(srcdir)/mips/micromips.dc
 @SIM_ENABLE_ARCH_mips_TRUE@mips_MICROMIPS16_DC = $(srcdir)/mips/micromips16.dc
+@SIM_ENABLE_ARCH_mn10300_TRUE@AM_CPPFLAGS_mn10300 = \
+@SIM_ENABLE_ARCH_mn10300_TRUE@	-DPOLL_QUIT_INTERVAL=0x20 \
+@SIM_ENABLE_ARCH_mn10300_TRUE@	-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=31
+
 @SIM_ENABLE_ARCH_mn10300_TRUE@mn10300_libsim_a_SOURCES = 
 @SIM_ENABLE_ARCH_mn10300_TRUE@mn10300_libsim_a_LIBADD = \
 @SIM_ENABLE_ARCH_mn10300_TRUE@	$(common_libcommon_a_OBJECTS) \
@@ -5297,9 +5301,6 @@
 @SIM_ENABLE_ARCH_mips_TRUE@	$(AM_V_at)touch $@
 @SIM_ENABLE_ARCH_mn10300_TRUE@$(mn10300_libsim_a_OBJECTS) $(mn10300_libsim_a_LIBADD): mn10300/hw-config.h
 
-@SIM_ENABLE_ARCH_mn10300_TRUE@mn10300/%.o: mn10300/%.c
-@SIM_ENABLE_ARCH_mn10300_TRUE@	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
-
 @SIM_ENABLE_ARCH_mn10300_TRUE@mn10300/%.o: common/%.c
 @SIM_ENABLE_ARCH_mn10300_TRUE@	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
 @SIM_ENABLE_ARCH_mn10300_TRUE@mn10300/modules.c: | $(mn10300_BUILD_OUTPUTS)
diff --git a/sim/mn10300/local.mk b/sim/mn10300/local.mk
index 06b4208..527d580 100644
--- a/sim/mn10300/local.mk
+++ b/sim/mn10300/local.mk
@@ -16,6 +16,10 @@
 ## You should have received a copy of the GNU General Public License
 ## along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+AM_CPPFLAGS_%C% = \
+	-DPOLL_QUIT_INTERVAL=0x20 \
+	-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=31
+
 %C%_libsim_a_SOURCES =
 %C%_libsim_a_LIBADD = \
 	$(common_libcommon_a_OBJECTS) \
@@ -37,9 +41,6 @@
 
 noinst_LIBRARIES += %D%/libsim.a
 
-%D%/%.o: %D%/%.c
-	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
-
 %D%/%.o: common/%.c
 	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)