southbridge/amd/sb?00/lpc.c: Move i8254/i8259 down in southbridge

We should configure i8254/i8259 down in to the southbridge rather than
romstage of every AGESA/CIMx board much like Intel boards do.

Change-Id: Id7c4f0baa0819d52aef9b0ee03c20d0fa16b9352
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5669
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
src/drivers/pc80: Remove empty struct keyboard

This is a empty struct that has propagated through the superio's & ec's
but really does nothing. Time to get rid of it before it adds yet more
cruft. However, since this touches many superio's at once we do this in
stages by first changing the function type to be a pure procedure.

Change-Id: Ibc732e676a9d4f0269114acabc92b15771d27ef2
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5617
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Rudolf Marek <r.marek@assembler.cz>