FreeBSD/src 97e1f1d (r354658)sys/x86/include specialreg.h, sys/x86/x86 identcpu.c

MFC: Add new bit definitions for TSX, related to the TAA issue.  The actual
mitigation will follow in a future commit.

Obtained from:  Intel
DeltaFile
+7-0sys/x86/include/specialreg.h
+3-0sys/x86/x86/identcpu.c
+10-02 files

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