northbridge: Add missing include <device/pci_def.h>

Change-Id: Ib63835d2407bbabbd78b43927f7fbd407ca06a08
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37841
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/northbridge/intel/gm45/acpi.c

@@ -20,6 +20,7 @@
 #include <arch/acpigen.h>
 #include <device/device.h>
 #include <device/pci.h>
+#include <device/pci_def.h>
 #include <device/pci_ops.h>
 
 #include "gm45.h"

src/northbridge/intel/gm45/northbridge.c

@@ -15,6 +15,7 @@
 
 #include <cbmem.h>
 #include <console/console.h>
+#include <device/pci_def.h>
 #include <device/pci_ops.h>
 #include <stdint.h>
 #include <device/device.h>

src/northbridge/intel/pineview/northbridge.c

@@ -16,6 +16,7 @@
 
 #include <cbmem.h>
 #include <console/console.h>
+#include <device/pci_def.h>
 #include <device/pci_ops.h>
 #include <stdint.h>
 #include <device/device.h>

src/northbridge/intel/x4x/northbridge.c

@@ -16,6 +16,7 @@
 
 #include <cbmem.h>
 #include <console/console.h>
+#include <device/pci_def.h>
 #include <device/pci_ops.h>
 #include <stdint.h>
 #include <device/device.h>