Merge branch 'Modernize-mdio-gpio'

Andrew Lunn says:

====================
Modernize mdio-gpio

This patchset is inspired by a previous version by Linus Walleij

It reworks the mdio-gpio code to make use of gpio descriptors instead
of gpio numbers. However compared to the previous version, it retains
support for platform devices. It does however remove the platform_data
header file. The needed GPIOs are now passed by making use of a gpiod
lookup table. e.g:

static struct gpiod_lookup_table zii_scu_mdio_gpiod_table = {
	.dev_id = "mdio-gpio.0",
	.table = {
		GPIO_LOOKUP_IDX("gpio_ich", 17, NULL, MDIO_GPIO_MDC,
				GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP_IDX("gpio_ich", 2, NULL, MDIO_GPIO_MDIO,
				GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP_IDX("gpio_ich", 21, NULL, MDIO_GPIO_MDO,
				GPIO_ACTIVE_LOW),
	},
};
====================

Signed-off-by: David S. Miller <davem@davemloft.net>