sb/intel/bd82x6x: Get rid of device_t

Use of device_t has been abandoned in ramstage.

Change-Id: I05f23504148d934109814b8f3c1c2a334366496a
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26530
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/southbridge/intel/bd82x6x/usb_ehci.c b/src/southbridge/intel/bd82x6x/usb_ehci.c
index b5ce820..7362dbd 100644
--- a/src/southbridge/intel/bd82x6x/usb_ehci.c
+++ b/src/southbridge/intel/bd82x6x/usb_ehci.c
@@ -74,7 +74,8 @@
 	printk(BIOS_DEBUG, "done.\n");
 }
 
-static void usb_ehci_set_subsystem(device_t dev, unsigned vendor, unsigned device)
+static void usb_ehci_set_subsystem(struct device *dev, unsigned vendor,
+				   unsigned device)
 {
 	u8 access_cntl;