hns3 udma: support dfx function of query stats of TX and RX packets.

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I85R2F


CVE: NA

---------------------------------------------------------------------

This patch supports dfx function of query stats of TX and RX packets.

Signed-off-by: Yu Zhang <zhangyu709@huawei.com>