vdev: refactor probe/remove
vdev: refactor probe/remove

This is a preparation for the introduction of the struct rte_vdev_device.

Signed-off-by: Jan Blunck <428a1e03bf18d7720952a3563b48222e4a94a135@infradead.org>
Tested-by: Ferruh Yigit <ba8734c3c506d2e3557bd4ac8fdaccd25bdb9aa7@intel.com>
Acked-by: Shreyansh Jain <9744844f062a9f6cf95f66f06508da54c8fc7929@nxp.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk