drm/nouveau: fix some usages of the wrong print function

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index d9e7c40..51db52f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -201,7 +201,7 @@
 	max_size = INT_MAX & ~((1 << lpg_shift) - 1);
 
 	if (size <= 0 || size > max_size) {
-		nv_warn(drm, "skipped size %x\n", (u32)size);
+		NV_WARN(drm, "skipped size %x\n", (u32)size);
 		return -EINVAL;
 	}