drm/nouveau: Add ttm page pool debugfs file.

ttm_page_pool file is hooked ttm_page_alloc_debugfs for pool
allocator state.
Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/nouveau/nouveau_debugfs.c

@@ -33,6 +33,8 @@
 #include "drmP.h"
 #include "nouveau_drv.h"
 
+#include <ttm/ttm_page_alloc.h>
+
 static int
 nouveau_debugfs_channel_info(struct seq_file *m, void *data)
 {
@@ -160,6 +162,7 @@ static struct drm_info_list nouveau_debugfs_list[] = {
 	{ "chipset", nouveau_debugfs_chipset_info, 0, NULL },
 	{ "memory", nouveau_debugfs_memory_info, 0, NULL },
 	{ "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL },
+	{ "ttm_page_pool", ttm_page_alloc_debugfs, 0, NULL },
 };
 #define NOUVEAU_DEBUGFS_ENTRIES ARRAY_SIZE(nouveau_debugfs_list)