This patch fixes the dbm690t keyboard not working issue. It should also

This patch fixes the dbm690t keyboard not working issue. It should also
fix the a8n_e and any other it8712f SIO keyboard issues. The it8712f
requires an archaic PS/2 mode setting to the keyboard controller before
accessing the keyboard. Beyond that, I made the keyboard controller and
keyboard init more robust and added more informative debug output.

Signed-off-by: Marc Jones <marc.jones@amd.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3610 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1