......
According to these codes, It only can get the realtek codec and can not
get hdmi codec, if just change azx_max_codecs[AZX_DRIVER_NVIDIA] to 4
I think if remove "if (!audio_codecs)", it will be better, and I only
need to chang azx_max_codecs[AZX_DRIVER_NVIDIA] to 4
Well, the check is there for a good reason.
There are many machines with broken BIOS reporting the 4th slot
available although it isn't actually. It's a workaround to skip such
a bogus information. So, it cannot be changed so easily.
We need to sort out this in a better way... Oh well.