hda/cs8409: Fix internal speaker detection

[Christian A. Ehrhardt]

Hi,

I have a DELL Inspirion 3501 laptop with a cirrus cs8904 HDA codec.
With more recent kernels the internal speakers stopped working.
I bisected the issue and tracked it down to this commit 

| commit c8b4f0865e82c14924c69c07d985af3ee9133316
| Author: Stefan Binding <sbinding@xxxxxxxxxxxxxxxxxxxxx>
| Date:   Wed Aug 11 19:56:52 2021 +0100
|
|     ALSA: hda/cs8409: Remove unnecessary delays
        
After a bit of experimenting with the timeouts I came
up with the patch below that fixes the issue for me.

However, I don't have the specs for the chip, i.e. I don't
know what a theoretically correct value would be.

Suggested patch below, please consider inclusion.

     regards   Christian