change #include "image.h" to <target/image.h>

Changes from the flat namespace to heirarchical one.  Instead of writing:

	#include "image.h"

the following form should be used.

	#include <target/image.h>

The exception is from .c files in the same directory.

src/server/gdb_server.c

@@ -33,7 +33,7 @@
 #include "server.h"
 #include "flash.h"
 #include "gdb_server.h"
-#include "image.h"
+#include <target/image.h>
 #include <jtag/jtag.h>