2553 mac address should be a dladm link property

*** 2345,2355 ****
   * Add a new unicast address to the MAC client.
   *
   * The MAC address can be specified either by value, or the MAC client
   * can specify that it wants to use the primary MAC address of the
   * underlying MAC. See the introductory comments at the beginning
!  * of this file for more more information on primary MAC addresses.
   *
   * Note also the tuple (MAC address, VID) must be unique
   * for the MAC clients defined on top of the same underlying MAC
   * instance, unless the MAC_UNICAST_NODUPCHECK is specified.
   *
--- 2345,2355 ----
   * Add a new unicast address to the MAC client.
   *
   * The MAC address can be specified either by value, or the MAC client
   * can specify that it wants to use the primary MAC address of the
   * underlying MAC. See the introductory comments at the beginning
!  * of this file for more information on primary MAC addresses.
   *
   * Note also the tuple (MAC address, VID) must be unique
   * for the MAC clients defined on top of the same underlying MAC
   * instance, unless the MAC_UNICAST_NODUPCHECK is specified.
   *