powerpc/powernv/npu: Use pci_dev_id() helper

Use new helper pci_dev_id() to simplify the code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>

arch/powerpc/platforms/powernv/npu-dma.c

@@ -1213,8 +1213,7 @@ int pnv_npu2_map_lpar_dev(struct pci_dev *gpdev, unsigned int lparid,
 	 * Currently we only support radix and non-zero LPCR only makes sense
 	 * for hash tables so skiboot expects the LPCR parameter to be a zero.
 	 */
-	ret = opal_npu_map_lpar(nphb->opal_id,
-			PCI_DEVID(gpdev->bus->number, gpdev->devfn), lparid,
+	ret = opal_npu_map_lpar(nphb->opal_id, pci_dev_id(gpdev), lparid,
 				0 /* LPCR bits */);
 	if (ret) {
 		dev_err(&gpdev->dev, "Error %d mapping device to LPAR\n", ret);
@@ -1224,7 +1223,7 @@ int pnv_npu2_map_lpar_dev(struct pci_dev *gpdev, unsigned int lparid,
 	dev_dbg(&gpdev->dev, "init context opalid=%llu msr=%lx\n",
 			nphb->opal_id, msr);
 	ret = opal_npu_init_context(nphb->opal_id, 0/*__unused*/, msr,
-			PCI_DEVID(gpdev->bus->number, gpdev->devfn));
+				    pci_dev_id(gpdev));
 	if (ret < 0)
 		dev_err(&gpdev->dev, "Failed to init context: %d\n", ret);
 	else
@@ -1258,7 +1257,7 @@ int pnv_npu2_unmap_lpar_dev(struct pci_dev *gpdev)
 	dev_dbg(&gpdev->dev, "destroy context opalid=%llu\n",
 			nphb->opal_id);
 	ret = opal_npu_destroy_context(nphb->opal_id, 0/*__unused*/,
-			PCI_DEVID(gpdev->bus->number, gpdev->devfn));
+				       pci_dev_id(gpdev));
 	if (ret < 0) {
 		dev_err(&gpdev->dev, "Failed to destroy context: %d\n", ret);
 		return ret;
@@ -1266,8 +1265,7 @@ int pnv_npu2_unmap_lpar_dev(struct pci_dev *gpdev)
 
 	/* Set LPID to 0 anyway, just to be safe */
 	dev_dbg(&gpdev->dev, "Map LPAR opalid=%llu lparid=0\n", nphb->opal_id);
-	ret = opal_npu_map_lpar(nphb->opal_id,
-			PCI_DEVID(gpdev->bus->number, gpdev->devfn), 0 /*LPID*/,
+	ret = opal_npu_map_lpar(nphb->opal_id, pci_dev_id(gpdev), 0 /*LPID*/,
 				0 /* LPCR bits */);
 	if (ret)
 		dev_err(&gpdev->dev, "Error %d mapping device to LPAR\n", ret);