iwlwifi: add required include to iwl-fh.h

Some variables are used in iwl-fh.h, but their type's definition
isn't included. This may break compilation when using the file
without including the necessary dependencies first.

Add the required include to iwl-fh.h.
Signed-off-by: Golan Ben Ami <golan.ben.ami@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/iwl-fh.h

@@ -68,6 +68,8 @@
 #include <linux/types.h>
 #include <linux/bitfield.h>
 
+#include "iwl-trans.h"
+
 /****************************/
 /* Flow Handler Definitions */
 /****************************/