src/device/device.c: Don't use device_t in ramstage

Use of device_t has been abandoned in ramstage.

Change-Id: I3d1bdefd00c91a98116ede5dc03c3ce253d1f0ed
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/28645
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/src/device/device.c b/src/device/device.c
index 7ba9d0a..dcbaef1 100644
--- a/src/device/device.c
+++ b/src/device/device.c
@@ -118,7 +118,7 @@
  *
  * @see device_path
  */
-static device_t __alloc_dev(struct bus *parent, struct device_path *path)
+static struct device *__alloc_dev(struct bus *parent, struct device_path *path)
 {
 	struct device *dev, *child;
 
@@ -152,7 +152,7 @@
 	return dev;
 }
 
-device_t alloc_dev(struct bus *parent, struct device_path *path)
+struct device *alloc_dev(struct bus *parent, struct device_path *path)
 {
 	struct device *dev;
 	spin_lock(&dev_lock);
@@ -168,7 +168,7 @@
  * @param path The relative path from the bus to the appropriate device.
  * @return Pointer to a device structure for the device on bus at path.
  */
-device_t alloc_find_dev(struct bus *parent, struct device_path *path)
+struct device *alloc_find_dev(struct bus *parent, struct device_path *path)
 {
 	struct device *child;
 	spin_lock(&dev_lock);