net: txgbe: Add support for Netswift 10G NIC

driver inclusion
category: feature
bugzilla: 50777
CVE: NA

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This patch contains main code of Netswift 10G NIC Driver which supports
devices as follows:
1) Netswift SP1000A 8088:1001[VID:DID]
2) Netswift WX1820AL 8088:2001[VID:DID]

Signed-off-by: zhenpengzheng <zhenpengzheng@net-swift.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>