FreeBSD/src 137fd41 (r334018)sys/i386/i386 trap.c, sys/i386/include pcpu.h

fix i386 builds after r334005 and r334009

r334005: add pc_ibpb_set as it is now referenced by common code
(although presumably not needed on i386 since it has been there
since the first spectre mitigation work on amd64)

r334009: there is no amd64 rflags -> i386 eflags
DeltaFile
+2-1sys/i386/include/pcpu.h
+1-1sys/i386/i386/trap.c
+3-22 files

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