[PATCH v2] net: phy: meson-gxl: Add generic dummy stubs for MMD register access

[Heiner Kallweit]

On 30.01.2023 21:03, Chris Healy wrote:
> From: Chris Healy <healych at amazon.com>
> 
> The Meson G12A Internal PHY does not support standard IEEE MMD extended
> register access, therefore add generic dummy stubs to fail the read and
> write MMD calls. This is necessary to prevent the core PHY code from
> erroneously believing that EEE is supported by this PHY even though this
> PHY does not support EEE, as MMD register access returns all FFFFs.
> 
> Fixes: 5c3407abb338 ("net: phy: meson-gxl: add g12a support")
> Signed-off-by: Chris Healy <healych at amazon.com>
> ---
> 
> Change in v2:
> * Add fixes tag
> 
Reviewed-by: Heiner Kallweit <hkallweit1 at gmail.com>