drm/nouveau/kms/nv50-: use NVIDIA's headers for core head_core_clr()

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

drivers/gpu/drm/nouveau/dispnv50/head507d.c

@@ -180,7 +180,7 @@ head507d_core_clr(struct nv50_head *head)
 	if ((ret = PUSH_WAIT(push, 2)))
 		return ret;
 
-	PUSH_NVSQ(push, NV507D, 0x0874 + (i * 0x400), 0x00000000);
+	PUSH_MTHD(push, NV507D, HEAD_SET_CONTEXT_DMA_ISO(i), 0x00000000);
 	return 0;
 }
 

drivers/gpu/drm/nouveau/dispnv50/head907d.c

@@ -184,7 +184,7 @@ head907d_core_clr(struct nv50_head *head)
 	if ((ret = PUSH_WAIT(push, 2)))
 		return ret;
 
-	PUSH_NVSQ(push, NV907D, 0x0474 + (i * 0x300), 0x00000000);
+	PUSH_MTHD(push, NV907D, HEAD_SET_CONTEXT_DMAS_ISO(i), 0x00000000);
 	return 0;
 }