image: bootm: Add OpenRTOS image type

Add separate image type for the Wittenstein OpenRTOS .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/image.h b/include/image.h
index af30d60..ee3afe3 100644
--- a/include/image.h
+++ b/include/image.h
@@ -152,6 +152,7 @@
 #define IH_OS_INTEGRITY		21	/* INTEGRITY	*/
 #define IH_OS_OSE		22	/* OSE		*/
 #define IH_OS_PLAN9		23	/* Plan 9	*/
+#define IH_OS_OPENRTOS		24	/* OpenRTOS	*/
 
 /*
  * CPU Architecture Codes (supported by Linux)