device/device.h: Rename pci_domain_scan_bus

On all targets the domain works as a host bridge. Xeon-sp code intends
to feature multiple host bridges below a domain, hence rename the
function to pci_host_bridge_scan_bus.

Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I4e65fdbaf0b42c5f4f62297a60d818d299d76f73
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78326
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Yidi Lin <yidilin@google.com>
diff --git a/src/soc/cavium/cn81xx/ecam0.c b/src/soc/cavium/cn81xx/ecam0.c
index e789fd8..d02e884 100644
--- a/src/soc/cavium/cn81xx/ecam0.c
+++ b/src/soc/cavium/cn81xx/ecam0.c
@@ -312,5 +312,5 @@
 struct device_operations pci_domain_ops_ecam0 = {
 	.read_resources   = ecam0_read_resources,
 	.init             = ecam0_init,
-	.scan_bus         = pci_domain_scan_bus,
+	.scan_bus         = pci_host_bridge_scan_bus,
 };