mmc: renesas_sdhi: use typedef for dma_filter_fn

Use existing typedef for dma_filter_fn to avoid duplicating type
definition.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Wolfram Sang <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Ulf Hansson <[e-mail]>

drivers/mmc/host/renesas_sdhi.h

···
 #ifndef RENESAS_SDHI_H
 #define RENESAS_SDHI_H
 
+#include <linux/dmaengine.h>
 #include <linux/platform_device.h>
 #include "tmio_mmc.h"
 
···
 struct renesas_sdhi_dma {
 	unsigned long end_flags;
 	enum dma_slave_buswidth dma_buswidth;
-	bool (*filter)(struct dma_chan *chan, void *arg);
+	dma_filter_fn filter;
 	void (*enable)(struct tmio_mmc_host *host, bool enable);
 	struct completion dma_dataend;
 	struct tasklet_struct dma_complete;