net: ethernet: Drop unused of_gpio.h

of_gpio.h is deprecated. Since there is no of_gpio_x API, drop
unused of_gpio.h. While at here, drop gpio.h and gpio/consumer.h if
no user in driver.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250320031542.3960381-1-peng.fan@oss.nxp.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>