drm/nouveau/nvkm: punt spurious irq messages to debug level

This can be completely normal in some situations (ie. non-stall intrs
when nothing is waiting on them).

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230525003106.3853741-2-skeggsb@gmail.com

drivers/gpu/drm/nouveau/nvkm/core/intr.c

@@ -212,8 +212,8 @@ nvkm_intr(int irq, void *arg)
 		list_for_each_entry(intr, &device->intr.intr, head) {
 			for (leaf = 0; leaf < intr->leaves; leaf++) {
 				if (intr->stat[leaf]) {
-					nvkm_warn(intr->subdev, "intr%d: %08x\n",
-						  leaf, intr->stat[leaf]);
+					nvkm_debug(intr->subdev, "intr%d: %08x\n",
+						   leaf, intr->stat[leaf]);
 					nvkm_intr_block_locked(intr, leaf, intr->stat[leaf]);
 				}
 			}