libpayload: Always set pciaddr

For debugging purposes always set the pciaddr attribute.
Tested on Lenovo T500.

Change-Id: I83a0e7f7196ed251fa0becc4e56bef3ca68f20f4
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/18599
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

payloads/libpayload/drivers/usb/ehci.c

@@ -867,6 +867,9 @@ ehci_pci_init (pcidev_t addr)
 
 	controller = ehci_init((unsigned long)reg_base);
 
+	if (controller)
+		controller->pcidev = addr;
+
 	return controller;
 }
 #endif