soc/intel/quark: Get rid of device_t

Use of device_t has been abandoned in ramstage.

Change-Id: I102c9b9b1066064589149388d5ebbcd6d0d81fa7
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26542
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

src/soc/intel/quark/gpio_i2c.c

@@ -24,7 +24,7 @@
 #include <soc/ramstage.h>
 #include <soc/reg_access.h>
 
-__weak void mainboard_gpio_i2c_init(device_t dev)
+__weak void mainboard_gpio_i2c_init(struct device *dev)
 {
 	/* Initialize any of the GPIOs or I2C devices */
 	printk(BIOS_SPEW, "WEAK; mainboard_gpio_i2c_init\n");