FreeBSD/src 87b1bf4 (r344352)sys/amd64/amd64 trap.c, sys/amd64/include pmap.h

amd64: add defines and decode protection keys and SGX page faults reasons.

Reviewed by:    markj
Tested by:      pho
Sponsored by:   The FreeBSD Foundation
MFC after:      2 weeks
Differential revision:  https://reviews.freebsd.org/D18893
DeltaFile
+3-1sys/amd64/amd64/trap.c
+2-0sys/amd64/include/pmap.h
+5-12 files

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