soc/amd: introduce and use common amd_cpu_bus_ops struct

The device operations for the CPU bus are identical for all AMD SoCs, so
introduce a common device operations struct for this and use it in all
AMD SoC's chipset devicetrees as ops for the CPU cluster.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Id32f89b8a33db8dbb747b917eeac3009fbae6631
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71998
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>

src/soc/amd/cezanne/chip.c

@@ -12,13 +12,6 @@
 #include <types.h>
 #include "chip.h"
 
-struct device_operations cezanne_cpu_bus_ops = {
-	.read_resources	= noop_read_resources,
-	.set_resources	= noop_set_resources,
-	.init		= mp_cpu_bus_init,
-	.acpi_fill_ssdt	= generate_cpu_entries,
-};
-
 static const char *soc_acpi_name(const struct device *dev)
 {
 	if (dev->path.type == DEVICE_PATH_DOMAIN)