net: hibmcge: Add pauseparam supported in this module

The MAC can automatically send or respond to pause frames.
This patch supports the function of enabling pause frames
by using ethtool.

Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20241216040532.1566229-6-shaojijie@huawei.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>