build error:
.../drivers/net/xenvirt/rte_eth_xenvirt.c:676:9:
error: ‘struct rte_eth_dev’ has no member named ‘driver’
eth_dev->driver = NULL;
^~
ethdev driver removed, removing assignment to it to fix the build error
Fixes: 9dca21fb80b6 ("ethdev: remove ethdev driver")
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>