soc/intel/braswell: use mp_cpu_bus_init

Implement mp_init_cpus and use mp_cpu_bus_init as init function in
cpu_bus_ops.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I2adcb1e1d79ced804925c81095cc5c0c2e6f9948
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58507
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
diff --git a/src/soc/intel/braswell/chip.c b/src/soc/intel/braswell/chip.c
index e3c7aa8..e2ee0a9 100644
--- a/src/soc/intel/braswell/chip.c
+++ b/src/soc/intel/braswell/chip.c
@@ -19,7 +19,7 @@
 static struct device_operations cpu_bus_ops = {
 	.read_resources   = noop_read_resources,
 	.set_resources    = noop_set_resources,
-	.init             = soc_init_cpus
+	.init             = mp_cpu_bus_init,
 };
 
 static void enable_dev(struct device *dev)