[PATCH] net: ethernet: mtk_eth_soc: use DEFINE_SHOW_ATTRIBUTE to simplify code

[Jakub Kicinski]

On Thu, 22 Sep 2022 22:29:29 +0800 Liu Shixin wrote:
> Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
> No functional change.

Does not apply cleanly. Please rebase on net-next and put 
[PATCH net-next v2] in the subject when reposting.