Lsof port can't build (again)

[@lbutlr]

When trying to update lsof on FreeBSD 12.1-RELEASE-p5 GENERIC i386 I get the following fatal error:

/usr/src/sys/sys/pcpu.h:224:10: fatal error: 'machine/pcpu_aux.h' file not found
#include <machine/pcpu_aux.h>
         ^~~~~~~~~~~~~~~~~~~~

After doing some searching $(find / -type d -name machine), I found a similarly named file:

# ll /usr/include/machine/pcpu.h
16 -r--r--r--  1 root  wheel   8.0K Oct 31  2019 /usr/include/machine/pcpu.h


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