[PATCH] x86: Disable RTM on Skylake [BZ #27398]

[Florian Weimer]

* H. J. Lu:

>> Hmm.  Xeon E3-1240 v6 has model number 158 (0x9e), too.
>
> Does it have RTM?

Yes, it does.

Maybe we should try to track down Siddhesh's bug instead?