Switch the code to use new style of getkeycode and setkeycode
methods to allow retrieving and setting keycodes not only by
their scancodes but also by index.
Acked-by: Ville Syrjälä <syrjala@sci.fi> Tested-by: Jarod Wilson <jarod@wilsonet.com> Tested-by: Ville Syrjälä <syrjala@sci.fi> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>