AGESA: Use pcidev_on_root()

We have constant CONFIG_CBB==0, replace ill dev_find_slot()
with safe pcidev_on_root();

Change-Id: Ieb2030fa3d77a9f49fc5faf12b92b5f00f49d354
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/26482
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/southbridge/amd/agesa/hudson/spi.c b/src/southbridge/amd/agesa/hudson/spi.c
index 9484651..ade7a02 100644
--- a/src/southbridge/amd/agesa/hudson/spi.c
+++ b/src/southbridge/amd/agesa/hudson/spi.c
@@ -81,7 +81,7 @@
 {
 	struct device *dev;
 
-	dev = dev_find_slot(0, PCI_DEVFN(0x14, 3));
+	dev = pcidev_on_root(0x14, 3);
 	spibar = pci_read_config32(dev, 0xA0) & ~0x1F;
 }