Merge branch 'hns3-devlink'

Guangbin Huang says:

====================
net: hns3: add support devlink

This series adds devlink support for the HNS3 ethernet driver.

change log:
V2 -> V3:
1. remove two patches of setting rx/tx buffer size by devlink param.

V1 -> V2:
1. add more detailed descriptions of parameters in document hns3.rst.

RFC -> V1:
1. use DEVLINK_INFO_VERSION_GENERIC_FW instead of "fw-version".
2. add devlink documentation for hns3 driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>