dma: coh901318: create a proper platform data file

This extracts the platform data that we will keep generic
from the U300 platform and associates it with the COH901318
driver in <linux/platform_data/dma-coh901318.h>.

Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c
index aa384e5..5fdd38b 100644
--- a/drivers/dma/coh901318.c
+++ b/drivers/dma/coh901318.c
@@ -21,6 +21,7 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 #include <linux/debugfs.h>
+#include <linux/platform_data/dma-coh901318.h>
 #include <mach/coh901318.h>
 
 #include "coh901318_lli.h"