Move the TYPE_PIIX4_PM definition to the corresponding header,
so other files can use it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/acpi/piix4.c         | 2 --
 include/hw/acpi/piix4.h | 2 ++
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
index 9c079d68341..160e7308c51 100644
--- a/hw/acpi/piix4.c
+++ b/hw/acpi/piix4.c
@@ -92,8 +92,6 @@ typedef struct PIIX4PMState {
     MemHotplugState acpi_memory_hotplug;
 } PIIX4PMState;
 
-#define TYPE_PIIX4_PM "PIIX4_PM"
-
 #define PIIX4_PM(obj) \
     OBJECT_CHECK(PIIX4PMState, (obj), TYPE_PIIX4_PM)
 
diff --git a/include/hw/acpi/piix4.h b/include/hw/acpi/piix4.h
index 26c2370e308..57d7e1cda20 100644
--- a/include/hw/acpi/piix4.h
+++ b/include/hw/acpi/piix4.h
@@ -1,6 +1,8 @@
 #ifndef HW_ACPI_PIIX4_H
 #define HW_ACPI_PIIX4_H
 
+#define TYPE_PIIX4_PM "PIIX4_PM"
+
 Object *piix4_pm_find(void);
 
 #endif
-- 
2.20.1