ARM: 6130/1: Gemini: add support for Raidsonic IB4220

depends on patch # 6128, 6129

Add support for Nasbox IB4220 from Raidsonic.
supported devices on SoC
- GPIO with led und keys
- UART
- PFLASH, set fixed partition table

Signed-off-by: Janos Laube <janos.dev@gmail.com>
Signed-off-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>