net: phy: mxl-gpy: add support for MxL86252 and MxL86282

net: phy: mxl-gpy: add support for MxL86252 and MxL86282

Add PHY driver support for Maxlinear MxL86252 and MxL86282 switches.
The PHYs built-into those switches are just like any other GPY 2.5G PHYs
with the exception of the temperature sensor data being encoded in a
different way.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/a6cd7fe461b011cec2b59dffaf34e9c8b0819059.1763818120.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>