Add newer nouveau firmware build goo

Symlinks inferred from linux-firmware/WHENCE and compared to a linux distro's
firmware.

Note: said linux distro appears to have some mistakes compared to the
li

Add newer nouveau firmware build goo

Symlinks inferred from linux-firmware/WHENCE and compared to a linux distro's
firmware.

Note: said linux distro appears to have some mistakes compared to the
linux-firmware repo in linking ucode_unload.bin to unload_bl.bin and vice
versa in some places.
I didn't replicate this aspect, and lack the hardware to test it.

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