pci_vdev: add pci_vdev_ops to pci_vdev

It will be used to define pci vdev own ops. And high level API
will call this ops intead of invoking device specific functions
directly.

Tracked-On: #3241
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

Author: fyin1

hypervisor/include/dm/vpci.h

@@ -64,6 +64,14 @@ union pci_cfgdata {
 	uint32_t data_32[(PCI_REGMAX + 1U) >> 4U];
 };
 
+struct pci_vdev;
+struct pci_vdev_ops {
+       void    (*init_vdev)(struct pci_vdev *vdev);
+       void    (*deinit_vdev)(struct pci_vdev *vdev);
+       int32_t (*write_vdev_cfg)(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t val);
+       int32_t (*read_vdev_cfg)(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t *val);
+};
+
 struct pci_vdev {
 	const struct acrn_vpci *vpci;
 	/* The bus/device/function triple of the virtual PCI device. */
@@ -85,6 +93,9 @@ struct pci_vdev {
 
 	/* Pointer to corresponding PCI PT device's vm_config */
 	struct acrn_vm_pci_ptdev_config *ptdev_config;
+
+	/* Pointer to corressponding operations */
+	struct pci_vdev_ops *vdev_ops;
 };
 
 struct pci_addr_info {