Log message:
sysutils/lscpu: fix CPU model detection on NetBSD.

# CHANGES

* Improve CPU model detection on NetBSD, by relying on machdep.cpu_brand
  sysctl identifier.
* Mark package as x86/amd64 -only as it leverages on CPUID
  instruction.
* Clarify description.
* Bump revision.

Log message:
lscpu: restrict package to *BSD.

Log message:
sysutils/lscpu: import package from wip.

This utility gathers CPU architecture information for OpenBSD, FreeBSD,
NetBSD, Mac OS X & DragonFly.
The main usage of this program should be for x86 architecture since it
leverages CPUID instructions. For other architectures, it just shows
very limited facts.