headers_check fix: linux/synclink.h

fix the following 'make headers_check' warning:

  usr/include/linux/synclink.h:209: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com>

include/linux/synclink.h

@@ -13,6 +13,8 @@
 #define _SYNCLINK_H_
 #define SYNCLINK_H_VERSION 3.6
 
+#include <linux/types.h>
+
 #define BIT0	0x0001
 #define BIT1	0x0002
 #define BIT2	0x0004