ARM: plat-nomadik: move DMA40 header to <linux/platform_data>

This moves the DMA40 platform data header from <plat/ste_dma40.h>
to <linux/platform_data/dma-ste-dma40.h> where is belongs.

Cc: Dan Williams <djbw@fb.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Ola Lilja <ola.o.lilja@stericsson.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Andreas Westin <andreas.westin@stericsson.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index ae55091..23c5573 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -19,8 +19,7 @@
 #include <linux/err.h>
 #include <linux/amba/bus.h>
 #include <linux/regulator/consumer.h>
-
-#include <plat/ste_dma40.h>
+#include <linux/platform_data/dma-ste-dma40.h>
 
 #include "dmaengine.h"
 #include "ste_dma40_ll.h"