iwlwifi: clean up some hw file includes

We can't get rid of everything yet due to
the BT definitions that I'm not quite sure
yet how to handle, but we can get rid of
most unneeded includes.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

drivers/net/wireless/iwlwifi/iwl-6000.c

@@ -28,7 +28,8 @@
 #include <linux/stringify.h>
 #include "iwl-config.h"
 #include "iwl-cfg.h"
-#include "iwl-dev.h" /* still needed */
+#include "iwl-agn-hw.h"
+#include "iwl-commands.h" /* needed for BT for now */
 
 /* Highest firmware API version supported */
 #define IWL6000_UCODE_API_MAX 6