[dpdk-stable] [PATCH] common/mlx5: fix Netlink port name attribute padding

[Matan Azrad]

From: Slava Ovsiienko
> On some kernels the string attributes within Netlink reply messages might be
> not padded with zeroes (in cases when string length is aligned with 4-byte
> boundary).
> This caused wrong physical port names recognition and
> mlx5 PMD load failures.
> 
> Fixes: 30a86157f6d5 ("net/mlx5: support PF representor")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
Acked-by: Matan Azrad <matan at nvidia.com>