net/mlx5: fix setting VF default MAC through representor

net/mlx5: fix setting VF default MAC through representor

With kernel bonding, there was an error when setting VF MAC address
through representor. The Netlink API requires ifindex of owner PF, not
bonding device ifindex.

Uses owner PF ifindex to modify VF default MAC in case of bonding
device.

Fixes: c21e5facf7d2 ("net/mlx5: use bond index for netdev operations")
Cc: stable@dpdk.org
Signed-off-by: Xueming Li <xuemingl@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>