[ARM] S3C24XX: Move plat/dma.h

Move the platform dma.h to dma-plat.h to ensure it doen't get
confused with plat/dma.h

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
6 files changed