devicetree: Single scan_bridges()

Change-Id: Ifd277992a69a4182e2fac92aaf746abe4fec2a1b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8540
Tested-by: build bot (Jenkins)
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/include/device/device.h

@@ -172,7 +172,7 @@ void dev_finalize_chips(void);
 
 /* Generic device helper functions */
 int reset_bus(struct bus *bus);
-unsigned int scan_bus(struct device *bus, unsigned int _max);
+void scan_bridges(struct bus *bus);
 void assign_resources(struct bus *bus);
 const char *dev_name(device_t dev);
 const char *dev_path(device_t dev);