soc/intel/broadwell: Get rid of device_t

Use of device_t has been abandoned in ramstage.

Change-Id: I043f4169ad080f9a449c8780500332c9512b62ff
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26583
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/broadwell/ehci.c b/src/soc/intel/broadwell/ehci.c
index e00fa25..b1ead77 100644
--- a/src/soc/intel/broadwell/ehci.c
+++ b/src/soc/intel/broadwell/ehci.c
@@ -24,7 +24,7 @@
 #include <soc/ehci.h>
 #include <soc/pch.h>
 
-static void usb_ehci_set_subsystem(device_t dev, unsigned int vendor,
+static void usb_ehci_set_subsystem(struct device *dev, unsigned int vendor,
 	unsigned int device)
 {
 	u8 access_cntl;