Added qemu toolchain and created zynq ps targets

Signed-off-by: Joppe Blondel <joppe@blondel.nl>

examples/zynq7000/SW/devicetree/Makefile

@@ -0,0 +1,13 @@
+.SILENT:
+
+TARGET				:= system.dtb
+
+BUILDROOT			?= $(shell pwd)
+BUILDDIR			:= build
+
+.PHONY: $(TARGET) all clean
+all: $(TARGET)
+
+$(TARGET):
+	gcc -I $(BUILDROOT) -I $(BUILDROOT)/include -E -nostdinc -undef -D__DTS__ -x assembler-with-cpp -o system.dts $(BUILDROOT)/system-top.dts
+	dtc -I dts -O dtb -o system.dtb system.dts