MAINTAINERS: Add csky

Add a maintainer information for the csky(C-SKY) architecture.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Guo Ren 2018-09-20 17:54:54 +08:00
commit 243b40a469