L2CA_SetFlushTimeout() function

* Function L2CA_SetFlushTimeout * Description This function set the automatic flush time out in Baseband * for ACL-U packets. * BdAddr : the remote BD address of ACL link. If it is BT_DB_ANY * then the flush time out will be applied to all ACL link. * FlushTimeout: flush time out in ms * 0x0000 : No automatic flush * L2CAP_NO_RETRANSMISSION : No retransmission * 0x0002 - 0xFFFE : flush time out, if (flush_tout*8)+3/5) * <= HCI_MAX_AUTO_FLUSH_TOUT (in 625us slot). * Otherwise, return FALSE. * L2CAP_NO_AUTOMATIC_FLUSH : No automatic flush * Returns TRUE if command succeeded, FALSE if failed * NOTE This flush timeout applies to all logical channels active on the * ACL link.