ARM: S3C64XX: Use clk_prepare_enable/clk_disable_unprepare in dma.c
ARM: S3C64XX: Use clk_prepare_enable/clk_disable_unprepare in dma.c

This patch modifies s3c64xx DMA driver to prepare and unprepare clocks
in addition to enableind and disabling, since it is required by common
clock framework.

Signed-off-by: Tomasz Figa <69861c78e6f8ec8c6fbfd1c06050c87cda6b23eb@gmail.com>
Tested-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@linaro.org>
Signed-off-by: Kukjin Kim <3fc711f4e08bc570a586748633ff7c76d0e1e253@samsung.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs