soc/intel/common/block/hda: Enable static scanning of devices under HDA

This change sets scan_bus operation for HDA to scan_static_bus to
allow enumeration of static devices under HDA.

BUG=b:112888584
TEST=Verified that devices added under HDA get enumerated on Nocturne.

Change-Id: I20759c2b702b2f107f0913e7ce92a82c6070ddc4
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/28807
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/common/block/hda/hda.c

@@ -68,6 +68,7 @@ static struct device_operations hda_ops = {
 	.init			= &hda_init,
 #endif
 	.ops_pci		= &pci_dev_ops_pci,
+	.scan_bus		= &scan_static_bus,
 };
 
 static const unsigned short pci_device_ids[] = {