Bluetooth: ISO: Align broadcast sync_timeout with connection timeout

This aligns broadcast sync_timeout with existing connection timeouts
which are 20 seconds long.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

include/net/bluetooth/bluetooth.h

@@ -164,6 +164,8 @@ struct bt_voice {
 #define BT_ISO_QOS_BIG_UNSET	0xff
 #define BT_ISO_QOS_BIS_UNSET	0xff
 
+#define BT_ISO_SYNC_TIMEOUT	0x07d0 /* 20 secs */
+
 struct bt_iso_io_qos {
 	__u32 interval;
 	__u16 latency;

net/bluetooth/iso.c

@@ -834,10 +834,10 @@ static struct bt_iso_qos default_qos = {
 		.bcode			= {0x00},
 		.options		= 0x00,
 		.skip			= 0x0000,
-		.sync_timeout		= 0x4000,
+		.sync_timeout		= BT_ISO_SYNC_TIMEOUT,
 		.sync_cte_type		= 0x00,
 		.mse			= 0x00,
-		.timeout		= 0x4000,
+		.timeout		= BT_ISO_SYNC_TIMEOUT,
 	},
 };