Port representors are probed in whatever unspecified order
ibv_get_device_list() returns them.
This is counterintuitive to users since DPDK port IDs assignment almost
never follows the same sequence as representor IDs. Additionally, the
master device does not necessarily inherit the lowest DPDK port ID.
Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
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