Earlier this year, as you may recall, we learned that at least some of Nokia’s Windows Phone devices would be powered by a dual-core chip from ST-Ericsson. At the time, this report came as something of a surprise, considering the fact that Qualcomm had long enjoyed hegemony over the Windows Phone market. Today, however, it becomes official, as Nokia has now selected ST-Ericsson’s NovaThor platform as its Windows Phone supplier. There is no sign, however, that this deal…