hpsa: add missing pci_set_master in kdump path

Add a call to pci_set_master(...)  missing in the previous
patch "hpsa: refine the pci enable/disable handling".
Found thanks to Rob Elliot.

Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Robert Elliott <elliott@hp.com>
Tested-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/scsi/hpsa.c

@@ -6544,7 +6544,7 @@ static int hpsa_init_reset_devices(struct pci_dev *pdev)
 		dev_warn(&pdev->dev, "failed to enable device.\n");
 		return -ENODEV;
 	}
-
+	pci_set_master(pdev);
 	/* Reset the controller with a PCI power-cycle or via doorbell */
 	rc = hpsa_kdump_hard_reset_controller(pdev);