Internal mic doesn't work on Dell Vostro 3360

[Oleksandr Natalenko]

Hi.

I've got Dell Vostro 3360 laptop, and internal mic doesn't work. I use 3.8 
series kernel.

When I try to record sound from mic I get only weird noise. All sliders in 
alsamixer are 100% and capture is ON.

alsa-info.sh script output could be found here: 
https://gist.github.com/a043fcf2686076d3e48f

I guess it could be fixed by specifying model for snd-hda-intel module but I've 
got no idea what model I should specify.

Takashi, could you help me?

Regards,
  Oleksandr.

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