sb/intel/fsp_rangeley: Get rid of device_t

Use of device_t has been abandoned in ramstage.

Change-Id: If92825f5bdb1399f61b7eba3ae81caa9c264a554
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26250
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/southbridge/intel/fsp_rangeley/spi.c

@@ -343,7 +343,7 @@ void spi_init(void)
 {
 	int ich_version = 0;
 	uint8_t bios_cntl;
-	device_t dev;
+	struct device *dev;
 	uint32_t ids;
 	uint16_t vendor_id, device_id;