Fixes the following warning:
arch/arm/mach-s5p64x0/dma.c:39:12: warning: 'dma_dmamask' defined but not used
[-Wunused-variable]
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>