bus/pci: avoid depending on private kernel value

The value 40 used in VFIO_GET_REGION_ADDR() is a private value
(VFIO_PCI_OFFSET_SHIFT) defined in Linux kernel source [1]. It
is not part of VFIO API, and we should not depend on it.

[1] https://github.com/torvalds/linux/blob/v6.2/include/linux/vfio_pci_core.h

Signed-off-by: Chenbo Xia <chenbo.xia@intel.com>
Acked-by: Sunil Kumar Kori <skori@marvell.com>
Acked-by: Yahui Cao <yahui.cao@intel.com>

drivers/bus/pci/linux/pci.c

@@ -645,7 +645,7 @@ int rte_pci_read_config(const struct rte_pci_device *device,
 		return pci_uio_read_config(intr_handle, buf, len, offset);
 #ifdef VFIO_PRESENT
 	case RTE_PCI_KDRV_VFIO:
-		return pci_vfio_read_config(intr_handle, buf, len, offset);
+		return pci_vfio_read_config(device, buf, len, offset);
 #endif
 	default:
 		rte_pci_device_name(&device->addr, devname,
@@ -669,7 +669,7 @@ int rte_pci_write_config(const struct rte_pci_device *device,
 		return pci_uio_write_config(intr_handle, buf, len, offset);
 #ifdef VFIO_PRESENT
 	case RTE_PCI_KDRV_VFIO:
-		return pci_vfio_write_config(intr_handle, buf, len, offset);
+		return pci_vfio_write_config(device, buf, len, offset);
 #endif
 	default:
 		rte_pci_device_name(&device->addr, devname,

drivers/bus/pci/linux/pci_init.h

@@ -66,9 +66,9 @@ int pci_uio_ioport_unmap(struct rte_pci_ioport *p);
 #endif
 
 /* access config space */
-int pci_vfio_read_config(const struct rte_intr_handle *intr_handle,
+int pci_vfio_read_config(const struct rte_pci_device *dev,
 			 void *buf, size_t len, off_t offs);
-int pci_vfio_write_config(const struct rte_intr_handle *intr_handle,
+int pci_vfio_write_config(const struct rte_pci_device *dev,
 			  const void *buf, size_t len, off_t offs);
 
 int pci_vfio_ioport_map(struct rte_pci_device *dev, int bar,