drm/nouveau: s/gm204/gm200/ in a number of places

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index ea39216..a43445c 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -297,7 +297,7 @@
 		.pushbuf = 0xb0007d00,
 	};
 	static const s32 oclass[] = {
-		GM204_DISP_CORE_CHANNEL_DMA,
+		GM200_DISP_CORE_CHANNEL_DMA,
 		GM107_DISP_CORE_CHANNEL_DMA,
 		GK110_DISP_CORE_CHANNEL_DMA,
 		GK104_DISP_CORE_CHANNEL_DMA,