node_device: Move DMI_DEVPATH into node_device_udev.c

The DMI_DEVPATH macro is used exclusively within
node_device_udev.c. There's no need to expose it.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>

src/node_device/node_device_udev.c

@@ -52,6 +52,8 @@ VIR_LOG_INIT("node_device.node_device_udev");
 # define TYPE_RAID 12
 #endif
 
+#define DMI_DEVPATH "/sys/devices/virtual/dmi/id"
+
 typedef struct _udevEventData udevEventData;
 struct _udevEventData {
     virObjectLockable parent;

src/node_device/node_device_udev.h

@@ -21,5 +21,3 @@
 #pragma once
 
 #include <libudev.h>
-
-#define DMI_DEVPATH "/sys/devices/virtual/dmi/id"