devicetree: Add fields for HyperTransport scans

Change-Id: I3b00e5e4e45089fbd7d0d6243d5e441bd8929c0b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8557
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>

src/include/device/device.h

@@ -86,6 +86,8 @@ struct bus {
 	uint16_t	secondary; 	/* secondary bus number */
 	uint16_t	subordinate;	/* max subordinate bus number */
 	unsigned char   cap;		/* PCi capability offset */
+	uint32_t	hcdn_reg;		/* For HyperTransport link  */
+
 	unsigned	reset_needed : 1;
 	unsigned	disable_relaxed_ordering : 1;
 };