[Sound-open-firmware] Backport of SOF driver to 5.2.9 fixes

[Mark Pearson]

Hi SOF folks,

I've been able to address the issue I was seeing with 5.2.9 kernel and the SOF driver on our whiskeylake based system but would really appreciate a quick review from the experts to confirm that I've not missed anything important or add any extra insight.

The problem was seen on boot - the driver suspends and resumes a couple of times during boot and during the second resume failed to load the firmware (err -110). After that point the driver, and hence the audio, isn't useable.

I backported these commits to address the problem:
https://github.com/thesofproject/linux/commit/bf705eaa7ce07f9c132f8e367fc2fc46b7842528#diff-cea2d94f890861b7634fd37c0b28f5e1 
https://github.com/thesofproject/linux/commit/64632de9140e52b72781fefe542314db7cd29d8c#diff-cea2d94f890861b7634fd37c0b28f5e1 
https://github.com/thesofproject/linux/commit/7623ae793c28cc0928c5d1292542dbb92fc2e9e2#diff-8f8468b53f48ad4bb215687e90b21d04 
https://github.com/thesofproject/linux/commit/f5dbba9fee801f4678a50d92c785f7f24d4ee2c6#diff-8f8468b53f48ad4bb215687e90b21d04
https://github.com/thesofproject/linux/commit/bb1ea3b31c28a131a5f5a50dd325198645526b19#diff-cea2d94f890861b7634fd37c0b28f5e1

We're still doing some testing to get confidence the fix is correct and stable but so far it looks good - everything is working.

Thanks
Mark