[RTEMS Project] #4177: Update arm64/aarch64 support

[RTEMS trac]

#4177: Update arm64/aarch64 support
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  Reporter:  Kinsey Moore    |      Owner:  (none)
      Type:  defect          |     Status:  new
  Priority:  normal          |  Milestone:
 Component:  network/libbsd  |    Version:
  Severity:  normal          |   Keywords:
Blocked By:                  |   Blocking:
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 This allows libbsd to compile under aarch64 which is also called arm64 in
 FreeBSD.

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Ticket URL: <http://devel.rtems.org/ticket/4177>
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