[MacPorts] #53520: Upgrade libebur128 to version 1.2.2

[MacPorts]

#53520: Upgrade libebur128 to version 1.2.2
-------------------------+-----------------
  Reporter:  audionuma   |      Owner:
      Type:  update      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  libebur128  |
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Changes (by audionuma):

 * Attachment "Portfile" added.

 libebur128 v1.2.2 Portfile

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Ticket URL: <https://trac.macports.org/ticket/53520>
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