device: Use scan_static_bus() over scan_lpc_bus()

Devices behind LPC can expose more buses (e.g. I2C on a super-i/o).
So we should scan buses on LPC devices, too.

Change-Id: I0eb005e41b9168fffc344ee8e666d43b605a30ba
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/29474
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/southbridge/intel/ibexpeak/lpc.c

@@ -784,7 +784,7 @@ static struct device_operations device_ops = {
 	.init			= lpc_init,
 	.final			= lpc_final,
 	.enable			= pch_lpc_enable,
-	.scan_bus		= scan_lpc_bus,
+	.scan_bus		= scan_static_bus,
 	.ops_pci		= &pci_ops,
 };