sunxi: Use binman for sunxi boards

Move sunxi boards to use binman. This involves adding the image definition
to the device tree and using it in the Makefile.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/dts/sunxi-u-boot.dtsi b/arch/arm/dts/sunxi-u-boot.dtsi
new file mode 100644
index 0000000..5adfd9b
--- /dev/null
+++ b/arch/arm/dts/sunxi-u-boot.dtsi
@@ -0,0 +1,14 @@
+#include <config.h>
+
+/ {
+	binman {
+		filename = "u-boot-sunxi-with-spl.bin";
+		pad-byte = <0xff>;
+		blob {
+			filename = "spl/sunxi-spl.bin";
+		};
+		u-boot-img {
+			pos = <CONFIG_SPL_PAD_TO>;
+		};
+	};
+};