iwlwifi: reorganize flow handler bitology

This patch cleans up FH bits and adds missing register values
that will be used later in TX initialization rewrite

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-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index 6008c0c..7d8b4e2 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -431,8 +431,8 @@
 
 	/* Enable DMA channel, using same id as for TFD queue */
 	iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(txq_id),
-		FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
-		FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL);
+			FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
+			FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE);
 
 	iwl_release_nic_access(priv);
 	spin_unlock_irqrestore(&priv->lock, flags);