Merge branch 'net-mdio-gpio-remove-unneeded-headers'

Bartosz Golaszewski says:

====================
net: mdio-gpio: remove unneeded headers

This removes linux/mdio-gpio.h and linux/platform_data/mdio-gpio.h as
they are not needed due to the symbols either being used by the
mdio-gpio module alone or not used at all.
====================

Link: https://patch.msgid.link/20260316-gpio-mdio-hdr-cleanup-v1-0-2df696f74728@oss.qualcomm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>