iwlwifi: introduce host commands callbacks

This patch adds place holder for host command handlers
for supporting different implementations per HW

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index 0ff0978..64bab66 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -82,6 +82,8 @@
 #define IWL_SKU_A       0x2
 #define IWL_SKU_N       0x8
 
+struct iwl_hcmd_ops {
+};
 struct iwl_hcmd_utils_ops {
 	int (*enqueue_hcmd)(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
 };
@@ -111,6 +113,7 @@
 
 struct iwl_ops {
 	const struct iwl_lib_ops *lib;
+	const struct iwl_hcmd_ops *hcmd;
 	const struct iwl_hcmd_utils_ops *utils;
 };