nvidia: Add GM20B signed firmware

These NVIDIA-signed firmwares are required to enable the graphics
engine on Tegra X1.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>

WHENCE

@@ -3114,6 +3114,20 @@ File: nvidia/gm206/gr/sw_bundle_init.bin
 File: nvidia/gm206/gr/sw_ctx.bin
 File: nvidia/gm206/gr/sw_method_init.bin
 File: nvidia/gm206/gr/sw_nonctx.bin
+File: nvidia/gm20b/acr/bl.bin
+File: nvidia/gm20b/acr/ucode_load.bin
+File: nvidia/gm20b/gr/fecs_bl.bin
+File: nvidia/gm20b/gr/fecs_data.bin
+File: nvidia/gm20b/gr/fecs_inst.bin
+File: nvidia/gm20b/gr/fecs_sig.bin
+File: nvidia/gm20b/gr/gpccs_bl.bin
+File: nvidia/gm20b/gr/gpccs_data.bin
+File: nvidia/gm20b/gr/gpccs_inst.bin
+File: nvidia/gm20b/gr/gpccs_sig.bin
+File: nvidia/gm20b/gr/sw_bundle_init.bin
+File: nvidia/gm20b/gr/sw_ctx.bin
+File: nvidia/gm20b/gr/sw_method_init.bin
+File: nvidia/gm20b/gr/sw_nonctx.bin
 
 Licence: Redistributable. See LICENCE.nvidia for details
 

nvidia/gm20b/gr/sw_method_init.bin

+../../gm200/gr/sw_method_init.bin
\ No newline at end of file