iwlwifi: bit field description for BT Config command

Give better bit filed define and description for flag parameter
in REPLY_BT_CONFIG command:

flags:
 bit 0 - 1: BT channel announcement enabled
         0: disable
 bit 1 - 1: priority of BT device enabled
         0: disable
 bit 2 - 1: BT 2 wire support enabled
         0: disable

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-commands.h

@@ -2247,10 +2247,19 @@ struct iwl_link_quality_cmd {
 	__le32 reserved2;
 } __attribute__ ((packed));
 
+/*
+ * BT configuration enable flags:
+ *   bit 0 - 1: BT channel announcement enabled
+ *           0: disable
+ *   bit 1 - 1: priority of BT device enabled
+ *           0: disable
+ *   bit 2 - 1: BT 2 wire support enabled
+ *           0: disable
+ */
 #define BT_COEX_DISABLE (0x0)
-#define BT_COEX_MODE_2W (0x1)
-#define BT_COEX_MODE_3W (0x2)
-#define BT_COEX_MODE_4W (0x3)
+#define BT_ENABLE_CHANNEL_ANNOUNCE BIT(0)
+#define BT_ENABLE_PRIORITY	   BIT(1)
+#define BT_ENABLE_2_WIRE	   BIT(2)
 
 #define BT_LEAD_TIME_MIN (0x0)
 #define BT_LEAD_TIME_DEF (0x1E)

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

@@ -1977,7 +1977,7 @@ EXPORT_SYMBOL(iwl_isr_legacy);
 int iwl_send_bt_config(struct iwl_priv *priv)
 {
 	struct iwl_bt_cmd bt_cmd = {
-		.flags = BT_COEX_MODE_4W,
+		.flags = BT_ENABLE_CHANNEL_ANNOUNCE | BT_ENABLE_PRIORITY,
 		.lead_time = BT_LEAD_TIME_DEF,
 		.max_kill = BT_MAX_KILL_DEF,
 		.kill_ack_mask = 0,