soc/intel/common/block: Add option to have subsystem_id in common pci driver

This patch ensures all Intel common PCI devices can
have subsystem ID programmed along with PCI resource
enabling (.enable_resources) as part of PCI enumeration
process.

TEST=Build and boot KBL/CNL/APL/GLK to ensure PCI
subsystem ID getting programmed.
Example:
Enabling resources...
PCI: 00:00.0 subsystem <- 8086/590c
PCI: 00:00.0 cmd <- 06
PCI: 00:02.0 subsystem <- 8086/591e

Change-Id: I46307b0db78c8864c85865bd0f3328d5141971be
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/22768
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/soc/intel/common/block/smbus/smbus.c b/src/soc/intel/common/block/smbus/smbus.c
index e526baf..880a061 100644
--- a/src/soc/intel/common/block/smbus/smbus.c
+++ b/src/soc/intel/common/block/smbus/smbus.c
@@ -83,6 +83,7 @@
 	.enable_resources	= &pci_dev_enable_resources,
 	.scan_bus		= &scan_smbus,
 	.init			= &pch_smbus_init,
+	.ops_pci		= &pci_dev_ops_pci,
 	.ops_smbus_bus		= &lops_smbus_bus,
 };