[PATCH] ARM: Samsung: use CMA for 2 memory banks for s5p-mfc device

Replace custom memory bank initialization using memblock_reserve and

dma_declare_coherent with a single call to CMA's dma_declare_contiguous.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Platform: enabling FIMC and a U2 defconfig for testing the MFC..