Merge branch 'net-phy-sfp-add-single-byte-smbus-sfp-access'

Maxime Chevallier says:

====================
net: phy: sfp: Add single-byte SMBus SFP access

This is V4 for the single-byte SMBus support for SFP cages as well as
embedded PHYs accessed over mdio-i2c.

v3: https://lore.kernel.org/20250314162319.516163-1-maxime.chevallier@bootlin.com
v2: https://lore.kernel.org/20250225112043.419189-1-maxime.chevallier@bootlin.com
v1: https://lore.kernel.org/20250223172848.1098621-1-maxime.chevallier@bootlin.com
====================

Link: https://patch.msgid.link/20250322075745.120831-1-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>