ARM: 6131/1: MAINTAINERS: update for ARM/Gemini

Patch #6128, #6129 and #6130 and this one are pullable on
 git://git.berlios.de/gemini-board

 gemini_updates

Modified MAINTAINERS to set new maintainer for Gemini SoC

Acked-by: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Signed-off-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>