soc/amd/*/chipset.cb: don't call dummy device functions host bridges

Function 0 of the devices that have the bridges to other buses are dummy
functions that can be left enabled to not have to shuffle around the
device function numbers when the first PCI bridge on those devices isn't
enabled. Those dummy device functions are however not PCI host bridges,
so change the comments from 'Dummy Host Bridge' to 'Dummy device
function'.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Suggested-by: Nico Huber <nico.h@gmx.de>
Change-Id: Ibddfdf558d84bc44434d718b86f41bd06044b22a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79396
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
diff --git a/src/soc/amd/stoneyridge/chipset_st.cb b/src/soc/amd/stoneyridge/chipset_st.cb
index fd148a8..0039ed9 100644
--- a/src/soc/amd/stoneyridge/chipset_st.cb
+++ b/src/soc/amd/stoneyridge/chipset_st.cb
@@ -10,7 +10,7 @@
 		device pci 00.2 alias iommu off ops amd_iommu_ops end
 		device pci 01.0 alias gfx off ops amd_graphics_ops end # internal GPU
 		device pci 01.1 alias gfx_hda off end # display HD Audio controller
-		device pci 02.0 on end # Dummy Host Bridge, do not disable
+		device pci 02.0 on end # Dummy device function, do not disable
 		device pci 02.1 alias gpp_bridge_0 off end
 		device pci 02.2 alias gpp_bridge_1 off end
 		device pci 02.3 alias gpp_bridge_2 off end