device/pci: Always define PCI_DEV()

This has uses outside ARCH_x86 and/or __PRE_RAM__.

Change-Id: I2eec674ec5ba4ffe03a20db0f73cf87e5e4b4d0d
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31302
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/include/device/pci_type.h

@@ -19,4 +19,11 @@
 typedef u32 pci_devfn_t;
 typedef u32 pnp_devfn_t;
 
+#define PCI_DEV(SEGBUS, DEV, FN) ( \
+	(((SEGBUS) & 0xFFF) << 20) | \
+	(((DEV) & 0x1F) << 15) | \
+	(((FN)  & 0x07) << 12))
+
+#define PCI_DEV_INVALID (0xffffffffU)
+
 #endif /* DEVICE_PCI_TYPE_H */