pci: Export the pci_intx() function

Move the pci_intx() definition to the PCI header file, so that it can
be called from other PCI files. It is used by the next patch.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Message-Id: <20211116170133.724751-3-fbarrat@linux.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>

hw/pci/pci.c

@@ -1497,11 +1497,6 @@ static void pci_irq_handler(void *opaque, int irq_num, int level)
     pci_change_irq_level(pci_dev, irq_num, change);
 }
 
-static inline int pci_intx(PCIDevice *pci_dev)
-{
-    return pci_get_byte(pci_dev->config + PCI_INTERRUPT_PIN) - 1;
-}
-
 qemu_irq pci_allocate_irq(PCIDevice *pci_dev)
 {
     int intx = pci_intx(pci_dev);

include/hw/pci/pci.h

@@ -735,6 +735,11 @@ void lsi53c8xx_handle_legacy_cmdline(DeviceState *lsi_dev);
 qemu_irq pci_allocate_irq(PCIDevice *pci_dev);
 void pci_set_irq(PCIDevice *pci_dev, int level);
 
+static inline int pci_intx(PCIDevice *pci_dev)
+{
+    return pci_get_byte(pci_dev->config + PCI_INTERRUPT_PIN) - 1;
+}
+
 static inline void pci_irq_assert(PCIDevice *pci_dev)
 {
     pci_set_irq(pci_dev, 1);