[Nouveau] GP10x failures on 4.12rc1

[Max Ehrlich]

I have two nvidia pascal cards on my machine, a GP107M (GeForce GTK 1050
Mobile) and a GP104 (GTX 1080 connected via thunderbolt).

With 4.12 RC1 (which I understand to include signed firmware from nVidia)
neither of these cards work. Here is the output from demsg when I modprobe
nouveau.

[  112.565946] nouveau: detected PR support, will not use DSM
[  112.565966] nouveau 0000:01:00.0: enabling device (0000 -> 0003)
[  112.566063] nouveau 0000:01:00.0: unknown chipset (ffffffff)
[  112.566067] nouveau: probe of 0000:01:00.0 failed with error -12
[  112.566245] nouveau 0000:0b:00.0: NVIDIA GP104 (134000a1)
[  112.850486] nouveau 0000:0b:00.0: bios: version 86.04.17.00.01
[  112.855307] nouveau 0000:0b:00.0: Direct firmware load for
nvidia/gp104/gr/sw_nonctx.bin failed with error -2
[  112.855310] nouveau 0000:0b:00.0: gr: failed to load gr/sw_nonctx
[  112.855315] nouveau 0000:0b:00.0: gr ctor failed, -2
[  112.855322] nouveau: probe of 0000:0b:00.0 failed with error -2

Let me know what else I can provide to help diagnose the issue, I am not
familiar with the debugging process for this kind of thing
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