build: add helper/types.h to config.h

this header is used in numerous files and adding to config.h
simplifies its use globally.

Change-Id: Id724a9950b90504721233022c7fb5768e9bc5548
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/649
Tested-by: jenkins
Reviewed-by: Xiaofan <xiaofanc@gmail.com>

src/rtos/rtos.h

@@ -22,7 +22,6 @@
 #define RTOS_H
 
 #include "server/server.h"
-#include <helper/types.h>
 #include <jim-nvp.h>
 
 typedef int64_t threadid_t;