Fix parallel build race.

gengtype-lex.c is built twice, once for BUILD and once for HOST, but
the BUILD flavour is missing a dependency on $(BCONFIG_H).

2012-11-21  Marcus Shawcroft  <marcus.shawcroft@arm.com>

	* Makefile.in (gengtype-lex.o): Add dependency on $(BCONFIG_H).

From-SVN: r193691

gcc/ChangeLog

+2012-11-21  Marcus Shawcroft  <marcus.shawcroft@arm.com>
+
+	* Makefile.in (gengtype-lex.o): Add dependency on $(BCONFIG_H).
+
 2012-11-21  Bin Cheng  <bin.cheng@arm.com>
 
 	* config/arm/arm-cores.def (cortex-m1, cortex-m0)

gcc/Makefile.in

@@ -3886,7 +3886,7 @@ build/gengenrtl.o : gengenrtl.c $(BCONFIG_H) $(SYSTEM_H) rtl.def
 # the build-%: rule doesn't apply to them.
 
 gengtype-lex.o build/gengtype-lex.o : gengtype-lex.c gengtype.h $(SYSTEM_H)
-gengtype-lex.o: $(CONFIG_H)
+gengtype-lex.o: $(CONFIG_H) $(BCONFIG_H)
 CFLAGS-gengtype-lex.o += -DGENERATOR_FILE
 build/gengtype-lex.o: $(BCONFIG_H)