dell_wmi: Use a C99-style array for bios_to_linux_keycode

It's currently hard to follow what maps to what, and it's hard to edit
the array.  Redo it as a C99-style array.

I generated this using emacs regexes and a python one-liner.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>