Adding bezel buttons to keymap

[phooky]

I'll leave it up to you to map the columns to physical pins and update the wiki. :)

[osresearch]

The numbering in my file is inconsistent -- I use "ribbon cable" to refer to the keyboard end, not the middle section. I should update it to use the same nomenclature everywhere.

Did you figure out the indicator lamp pins (for emergency and the red led at the bottom)?