net: hns3: adds support for reading module eeprom info

driver inclusion
category: feature
bugzilla: NA
CVE: NA

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This patch adds support for reading the optical module eeprom
info via "ethtool -m".

Signed-off-by: Shengzui You <youshengzui@huawei.com>
Reviewed-by: Weiwei Deng <dengweiwei@huawei.com>
Reviewed-by: Zhaohui Zhong <zhongzhaohui@huawei.com>
Reviewed-by: Junxing Chen <chenjunxin1@huawei.com>
Reviewed-by: Zhong Zhaohui <zhongzhaohui@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>