With all mxs-dma clients moved to use generic DMA helper, the code
left from generic DMA binding conversion can be removed now.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Reviewed-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>