src/drivers/lenovo/wacom.c: Get rid of device_t

Use of `device_t` has been abandoned in ramstage.

Change-Id: Idb139d5cb2ac10f4051407137242ccee1a09b785
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26011Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/drivers/lenovo/wacom.c

@@ -43,7 +43,7 @@ drivers_lenovo_is_wacom_present(void)
 	const char *pn;
 	int i;
 	static int result = -1;
-	device_t superio;
+	struct device *superio;
 	u8 sioid;
 
 	if (result != -1)