Bug#1016286: Bogus warnings about missing firmware (nvidia) while updating initramfs

[Camaleón <noelamac@gmail.com>]

Package: firmware-misc-nonfree
Version: 20210315-3
Severity: normal

Hello,

When invoking update-initramfs (e.g., after a kernel update), I'm 
getting a bunch of warnings:

Configurando linux-image-5.10.0-16-amd64 (5.10.127-2) ...
/etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-5.10.0-16-amd64
W: Possible missing firmware /lib/firmware/nvidia/gp100/acr/ucode_load.bin for module nouveau
W: Possible missing firmware /lib/firmware/nvidia/gp100/acr/bl.bin for module nouveau
W: Possible missing firmware /lib/firmware/nvidia/gm206/acr/ucode_load.bin for module nouveau
W: Possible missing firmware /lib/firmware/nvidia/gm206/acr/bl.bin for module nouveau
W: Possible missing firmware /lib/firmware/nvidia/gm204/acr/ucode_load.bin for module nouveau
W: Possible missing firmware /lib/firmware/nvidia/gm204/acr/bl.bin for module nouveau
W: Possible missing firmware /lib/firmware/nvidia/gm200/acr/ucode_load.bin for module nouveau
W: Possible missing firmware /lib/firmware/nvidia/gm200/acr/bl.bin for module nouveau
W: Possible missing firmware /lib/firmware/nvidia/gp100/acr/ucode_unload.bin for module nouveau
W: Possible missing firmware /lib/firmware/nvidia/gm206/acr/ucode_unload.bin for module nouveau

(...)

But none of these blobs files are really needed for nouveau driver on 
my old hardware:

root@stt008:~# lspci | grep -i vga
03:00.0 VGA compatible controller: NVIDIA Corporation NV43 [Quadro NVS 440] (rev a2)
04:00.0 VGA compatible controller: NVIDIA Corporation NV43 [Quadro NVS 440] (rev a2)

Would be nice some kind of «magic» to prevent these warning reaching 
users when these files are not needed at all on old cards (backwards 
kepler).

Greetings,

-- 
Camaleón