Get rid of mainboard_io_trap_handler.
The only purpose is to enable tp-smapi, but is already done on all
boards in h8_enable, as of devicetree setting config0.
Change-Id: I33fd829a7e34aefa8f76ca6020cc8e802f7aab17
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/19790
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>