Support probing the device multiple times so that additional port
representors can be created with hotplug EAL API. To hotplug a
representor, the PF must be hotplugged with different representor
device argument.
Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru> Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru> Reviewed-by: Andy Moreton <amoreton@xilinx.com> Reviewed-by: Ivan Malov <ivan.malov@oktetlabs.ru>