iwlagn: iwl-pci doesn't include iwl-dev any more

Move all the iwlXXX_abgn_cfg forward declaration to a separate file
so that iwl-pci.c doesn't need to include iwl-agn.h that includes
all iwl-dev.h
This allows to provide real encapsulation. Dereferencing iwl_priv
in the bus layer will now lead to a compilation error.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-shared.h b/drivers/net/wireless/iwlwifi/iwl-shared.h
index 45f8a33..27aee52 100644
--- a/drivers/net/wireless/iwlwifi/iwl-shared.h
+++ b/drivers/net/wireless/iwlwifi/iwl-shared.h
@@ -77,6 +77,11 @@
 struct iwl_sensitivity_ranges;
 struct iwl_trans_ops;
 
+#define DRV_NAME        "iwlagn"
+#define IWLWIFI_VERSION "in-tree:"
+#define DRV_COPYRIGHT	"Copyright(c) 2003-2011 Intel Corporation"
+#define DRV_AUTHOR     "<ilw@linux.intel.com>"
+
 extern struct iwl_mod_params iwlagn_mod_params;
 
 /**