binman: tegra: Convert to use binman

Update tegra to use binman for image creation. This still includes the
current Makefile logic, but a later patch will remove this. Three output
files are created, all of which combine
SPL and U-Boot:

   u-boot-tegra.bin        - standard image
   u-boot-dtb-tegra.bin    - same as u-boot-tegra.bin
   u-boot-nodtb-target.bin - includes U-Boot without the appended device tree

The latter is useful for build systems where the device is appended later,
perhaps after being modified.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/dts/tegra210-u-boot.dtsi b/arch/arm/dts/tegra210-u-boot.dtsi
new file mode 100644
index 0000000..7c11972
--- /dev/null
+++ b/arch/arm/dts/tegra210-u-boot.dtsi
@@ -0,0 +1,3 @@
+#include <config.h>
+
+#include "tegra-u-boot.dtsi"