make dtbxx use Targetxx dts for dtb.

Change-Id: I9b39a387037c14a74c2d43042914c2cf4e94252d
Signed-off-by: Chong Qiao <qiaochong@loongson.cn>

Makefile.inc

@@ -219,7 +219,7 @@ ${START}: ${TARGET}/${SUBTARGET}/${START:.o=.S} Makefile
 	${NORMAL_S}
 
 dtb:
-	${CC} ${AFLAGS} ${CPPFLAGS}  -E  -D__ASSEMBLY__ -D__DTS__ -Ulinux -x assembler-with-cpp -o $(DTB_O) $(DTB_I)
+	${CC} ${AFLAGS} ${CPPFLAGS} -nostdinc -E  -D__ASSEMBLY__ -D__DTS__ -Ulinux -x assembler-with-cpp -o $(DTB_O) $(DTB_I)
 
 zpmon: startz.o
 	rm start.o && cp -f startz.o start.o

zloader/Makefile.inc

@@ -150,11 +150,18 @@ ifndef gencode
 gencode=./genram
 endif
 
-dtb:
-	make -C ../Targets/${TARGET}/compile/${TARGETEL}/ DTB_O=`pwd`/${TARGET}.dtb.i DTB_I=`pwd`/../Targets/${TARGET}/conf/${TARGET}.dts dtb
+define dtb_rules
+	make -C ../Targets/${TARGET}/compile/${TARGETEL}/ DTB_O=`pwd`/${TARGET}.dtb.i DTB_I=`pwd`/../Targets/${TARGET}/conf/${TARGET}$(@:dtb%=%).dts dtb
 	./dtc -I dts -O dtb -o ${TARGET}.dtb  ${TARGET}.dtb.i
 	( echo  "#include <include/load_dtb.h>";echo NVRAM_OFFS; echo DTB_OFFS; )| make -C ../Targets/${TARGET}/compile/${TARGETEL}/ DTB_O=`pwd`/dtbinfo.txt DTB_I=- dtb
 	[ -f gzrom.bin ] && cp gzrom.bin gzrom-dtb.bin && python ../tools/pmonenv.py -O $$((`tail -n 1 dtbinfo.txt`)) -o $$((`tail -n 2 dtbinfo.txt|head -n 1`)) -f gzrom-dtb.bin -d ${TARGET}.dtb -w  al=\(usb0,0\)/boot/vmlinuz al1=\(wd0,0\)/boot/vmlinuz append="'console=ttyS0,115200 console=tty initcall_debug=1 loglevel=20'" FR=1
+endef
+
+dtb:
+	$(dtb_rules)
+dtb%:
+	$(dtb_rules)
+
 cleanall: clean
 	make -C ../Targets/${TARGET}/compile/${TARGETEL}/ clean
 clean: