dma: imx-dma: Add oftree support
Adding devicetree support for imx-dma driver. Use driver name for function 'imx_dma_is_general_purpose' because the devicename for devicetree initialized devices is different. Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de> Reviewed-by: NArnd Bergmann <arnd@arndb.de> Reviewed-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NSascha Hauer <s.hauer@pengutronix.de> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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