net/iavf: fix multi-process shared data

net/iavf: fix multi-process shared data

When the iavf_adapter instance is not initialized completely in the
primary process, the secondary process accesses its "rte_eth_dev"
member, it causes secondary process crash.

This patch replaces eth_dev with eth_dev_data in iavf_adapter.

Fixes: f978c1c9b3b5 ("net/iavf: add RSS hash parsing in AVX path")
Fixes: 9c9aa0040344 ("net/iavf: add offload path for Rx AVX512 flex descriptor")
Fixes: 63660ea3ee0b ("net/iavf: add RSS hash parsing in SSE path")
Cc: stable@dpdk.org
Signed-off-by: Dapeng Yu <dapengx.yu@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>