iwlagn: remove dual-indirect call to simply the code

After driver split, no need to make the code so complex

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index b282190..d4a6010 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -711,7 +711,7 @@
 
 	iwlagn_set_pwr_vmain(priv);
 
-	priv->cfg->ops->lib->nic_config(priv);
+	priv->cfg->lib->nic_config(priv);
 
 	/* Allocate the RX queue, or reset if it is already allocated */
 	trans_rx_init(priv);