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/jtag/drivers/libusb0_common.h

@@ -22,7 +22,6 @@
 #ifndef JTAG_LIBUSB_COMMON_H
 #define JTAG_LIBUSB_COMMON_H
 
-#include <helper/types.h>
 #include <usb.h>
 
 #define jtag_libusb_device			usb_device

src/jtag/drivers/libusb1_common.h

@@ -22,7 +22,6 @@
 #ifndef JTAG_LIBUSB_COMMON_H
 #define JTAG_LIBUSB_COMMON_H
 
-#include <helper/types.h>
 #include <libusb-1.0/libusb.h>
 
 #define jtag_libusb_device			libusb_device

src/jtag/drivers/rlink.h

@@ -18,8 +18,6 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#include <helper/types.h>
-
 struct rlink_speed_table {
 	uint8_t const *dtc;
 	uint16_t dtc_size;

src/jtag/drivers/ulink.c

@@ -26,7 +26,6 @@
 #include <jtag/interface.h>
 #include <jtag/commands.h>
 #include <target/image.h>
-#include <helper/types.h>
 #include "usb_common.h"
 #include "OpenULINK/include/msgtypes.h"
 

src/jtag/drivers/usb_common.h

@@ -20,8 +20,6 @@
 #ifndef JTAG_USB_COMMON_H
 #define JTAG_USB_COMMON_H
 
-#include <helper/types.h>
-
 #include <usb.h>
 
 int jtag_usb_open(const uint16_t vids[], const uint16_t pids[],