Conspiracy theory No. 1
If a Japanese-owned design house in the UK are licensing stuff to be made in the far East, then even if it does contain licensed US technology you cannot simply revoke a license once purchased. That is illegal under international trade law. A legal challenge would comfortably outlast Trump.
The real question is, why does a Japanese-owned company in the UK see its future more closely allied to Trump's last days than to China? I smell a rat here. A critical moment in Intel's life-support plan perhaps?