Add support for operating system OSE

Add OSE as operating system for mkimage and bootm.

Signed-off-by: Torkel Lundgren <torkel.lundgren@enea.com>
diff --git a/include/config_defaults.h b/include/config_defaults.h
index 0337163..abdf3be 100644
--- a/include/config_defaults.h
+++ b/include/config_defaults.h
@@ -12,6 +12,7 @@
 /* Support bootm-ing different OSes */
 #define CONFIG_BOOTM_LINUX 1
 #define CONFIG_BOOTM_NETBSD 1
+#define CONFIG_BOOTM_OSE 1
 #define CONFIG_BOOTM_RTEMS 1
 
 #define CONFIG_GZIP 1