drivers/ricoh/rce822: Get rid of device_t

Use of `device_t` has been abandoned in ramstage.

Change-Id: I6f6c4330ad88e013b24761a3aa1c29bc869da39d
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26013Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/drivers/ricoh/rce822/rce822.c

@@ -39,7 +39,7 @@ static void rce822_init(struct device *dev)
 	pci_write_config8(dev, 0xf9, 0x00);
 }
 
-static void rce822_set_subsystem(device_t dev, unsigned vendor, unsigned device)
+static void rce822_set_subsystem(struct device *dev, unsigned vendor, unsigned device)
 {
 	if (!vendor || !device) {
 		pci_write_config32(dev, 0xac,