soc/amd/*: Hook up SMBus ops to devicetree

This removes the need for a PCI driver.

Change-Id: Iab75f8c28a247f1370f4425e19cc215678bfa3e5
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68140
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
diff --git a/src/soc/amd/stoneyridge/chipset_st.cb b/src/soc/amd/stoneyridge/chipset_st.cb
index 3544ea8..743822b 100644
--- a/src/soc/amd/stoneyridge/chipset_st.cb
+++ b/src/soc/amd/stoneyridge/chipset_st.cb
@@ -22,7 +22,7 @@
 		device pci 10.0 alias xhci off ops stoneyridge_usb_ops end
 		device pci 11.0 alias sata off end
 		device pci 12.0 alias ehci off ops stoneyridge_usb_ops end
-		device pci 14.0 alias smbus on end # primary FCH function
+		device pci 14.0 alias smbus on ops amd_smbus_ops end # primary FCH function
 		device pci 14.3 alias lpc_bridge on end
 		device pci 14.7 alias sdhci off end
 		device pci 18.0 alias ht_0 on end