soc/intel/broadwell: Use mp_cpu_bus_init

This is needed to allow switching to Haswell CPU code in the future.

Change-Id: Ic642f32f9c4a269a66ac470b7a7217f20ff8bfba
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46886
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/broadwell/northbridge.c

@@ -461,7 +461,7 @@ static struct device_operations pci_domain_ops = {
 static struct device_operations cpu_bus_ops = {
 	.read_resources   = noop_read_resources,
 	.set_resources    = noop_set_resources,
-	.init             = &broadwell_init_cpus,
+	.init             = mp_cpu_bus_init,
 };
 
 static void broadwell_enable(struct device *dev)