misc: pci_endpoint_test: Enable legacy interrupt

PCI core does not enable legacy interrupt if it finds MSI or
MSIX interrupt. Explicitly enable legacy interrupt here in order
to perform legacy interrupt tests.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

drivers/misc/pci_endpoint_test.c

@@ -774,6 +774,7 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev,
 	}
 
 	pci_set_master(pdev);
+	pci_intx(pdev, true);
 
 	if (!pci_endpoint_test_alloc_irq_vectors(test, irq_type))
 		goto err_disable_irq;