soc/amd/cezanne: add empty mp_init_cpus

Change-Id: I845a7e2cfea58ca08cd2a6f0d884dbbbe1a7bdef
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50483
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/cezanne/chip.c

@@ -7,8 +7,9 @@
 #include "chip.h"
 
 struct device_operations cpu_bus_ops = {
-	.read_resources	  = noop_read_resources,
-	.set_resources	  = noop_set_resources,
+	.read_resources	= noop_read_resources,
+	.set_resources	= noop_set_resources,
+	.init		= mp_cpu_bus_init,
 };
 
 static struct device_operations pci_domain_ops = {