PCI: Remove PCI_IRQ_LEGACY

Replace the last references to PCI_IRQ_LEGACY with PCI_IRQ_INTX in pci.h
header file. With this change, PCI_IRQ_LEGACY is unused and we can remove
its definition.

Link: https://lore.kernel.org/r/20240325070944.3600338-29-dlemoal@kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Author: damien-lemoal

include/linux/pci.h

@@ -1077,8 +1077,6 @@ enum {
 #define PCI_IRQ_MSIX		(1 << 2) /* Allow MSI-X interrupts */
 #define PCI_IRQ_AFFINITY	(1 << 3) /* Auto-assign affinity */
 
-#define PCI_IRQ_LEGACY		PCI_IRQ_INTX /* Deprecated! Use PCI_IRQ_INTX */
-
 /* These external functions are only available when PCI support is enabled */
 #ifdef CONFIG_PCI
 
@@ -1648,8 +1646,7 @@ int pci_set_vga_state(struct pci_dev *pdev, bool decode,
  */
 #define PCI_IRQ_VIRTUAL		(1 << 4)
 
-#define PCI_IRQ_ALL_TYPES \
-	(PCI_IRQ_LEGACY | PCI_IRQ_MSI | PCI_IRQ_MSIX)
+#define PCI_IRQ_ALL_TYPES	(PCI_IRQ_INTX | PCI_IRQ_MSI | PCI_IRQ_MSIX)
 
 #include <linux/dmapool.h>
 
@@ -1719,7 +1716,7 @@ pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
 			       unsigned int max_vecs, unsigned int flags,
 			       struct irq_affinity *aff_desc)
 {
-	if ((flags & PCI_IRQ_LEGACY) && min_vecs == 1 && dev->irq)
+	if ((flags & PCI_IRQ_INTX) && min_vecs == 1 && dev->irq)
 		return 1;
 	return -ENOSPC;
 }