net/mlx5: support new global device syntax
net/mlx5: support new global device syntax

This patch support new global device syntax like:
	bus=pci,addr=BB:DD.F/class=eth/driver=mlx5,devargs,..

In driver parameters check, ignores "driver" key which is part of new
global device syntax instead of reporting error.

Signed-off-by: Xueming Li <a578f76ca98b1dec92e0d1baef814b93f3f2f3b4@nvidia.com>
Acked-by: Viacheslav Ovsiienko <5b8db9bb93a9a9aefc8828f79604d1fe963a53dd@nvidia.com>

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