card_label support in v4l2loopback_dc

[yofukashino]

I have the following in /etc/modprobe.d/droidcam.conf:

options v4l2loopback_dc width=1920 height=1080 video_nr=0 exclusive_caps=1 card_label="Droidcam"

But /sys/class/video4linux/video0/name still shows:

Loopback video device

This doesn't happen with the normal v4l2loopback module, only with v4l2loopback_dc. Seems like card_label is being ignored.

Would be nice if this worked the same as v4l2loopback.

Edit: Tested on Fedora 42. Kernel v6.15.3 and Droidcam v2.1.4