drm/nouveau/bios/tu104: initial support

No real surprises here so far.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/engine/device/base.c

@@ -2437,6 +2437,7 @@ nv140_chipset = {
 static const struct nvkm_device_chip
 nv164_chipset = {
 	.name = "TU104",
+	.bios = nvkm_bios_new,
 	.pci = gp100_pci_new,
 };