[MacPorts] #60940: libvpx: Support arm64

[MacPorts]

#60940: libvpx: Support arm64
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  Reporter:  ryandesign  |      Owner:  dbevans
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  libvpx      |
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Comment (by jpanetta):

 I created a pull request that seems to get things working on arm64:

 https://github.com/macports/macports-ports/pull/9252

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Ticket URL: <https://trac.macports.org/ticket/60940#comment:4>
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