This patch adds support for Atom C2000 series (Avoton and Rangeley). And has
the following options:
- New addresses register.
- Caching output levels (see Intel external design spec, table 48-29)
- No hardware blink.
Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vincent Donnefort <vdonnefort@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>