change #include "time_support.h" to <helper/time_support.h>

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

	#include "time_support.h"

the following form should be used.

	#include <helper/time_support.h>

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

src/flash/flash.c

@@ -30,7 +30,7 @@
 #include "flash.h"
 #include "common.h"
 #include "image.h"
-#include "time_support.h"
+#include <helper/time_support.h>
 
 static int flash_write_unlock(struct target *target, struct image *image, uint32_t *written, int erase, bool unlock);