roda/rk886ex: Move device changes to mainboard code from acpi tables code

Change-Id: I3d694e5b3092d78bce89f6baa7b2dedffddf3012
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6807
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>