ARM: dts: add Gemini PATA/SATA support

The NAS4229B and SQ201 Gemini systems have a PATA controller
which is linked to a SATA bridge in the SoC. Enable both
platforms to use the PATA/SATA devices.

Cc: John Feng-Hsin Chiang <john453@faraday-tech.com>
Cc: Greentime Hu <green.hu@gmail.com>
Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>