Fix Audio on Braswell Chromebooks under Linux

This has been tested on Ubuntu 20.04

Clone this repo or download the files manually then run

chmod +x script.sh
./script.sh

What does it do ?

• Get a working copy of asound.state, the alsa file responsible for audio levels
• Copies it alsa's directory
• Registers it permanently

What works ?

• Speakers (you can increase volume to a dangerous level)
• Headphones (same rule applies)
• Speaker to Headphones switch on Headphones plug-in

What doesn't ?

• Internal mic (as other users tested, it registers only when blowing on it, at full volume just once, binary style)

Not tested

• Headphones mic (such as built-in mic in headphones)