MIPS: Netlogic: Add support for built in DTB

Provide a config option to embed a device tree for XLP evaluation
boards. This DTB will be used if the firmware does not pass in a
device tree pointer.

Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Patchwork: http://patchwork.linux-mips.org/patch/4103/
Signed-off-by: John Crispin <blogic@openwrt.org>
diff --git a/arch/mips/netlogic/dts/Makefile b/arch/mips/netlogic/dts/Makefile
new file mode 100644
index 0000000..67ae3fe2
--- /dev/null
+++ b/arch/mips/netlogic/dts/Makefile
@@ -0,0 +1,4 @@
+obj-$(CONFIG_DT_XLP_EVP) := xlp_evp.dtb.o
+
+$(obj)/%.dtb: $(obj)/%.dts
+	$(call if_changed,dtc)