dma: ipu: rename mach/ipu.h to include/linux/dma/ipu-dma.h

The header ipu.h really belongs to dma subsystem rather than imx
platform.  Rename it to ipu-dma.h and put it into include/linux/dma/.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: linux-media@vger.kernel.org
Cc: linux-fbdev@vger.kernel.org
diff --git a/drivers/video/mx3fb.c b/drivers/video/mx3fb.c
index ce1d452..0324c07 100644
--- a/drivers/video/mx3fb.c
+++ b/drivers/video/mx3fb.c
@@ -26,10 +26,10 @@
 #include <linux/console.h>
 #include <linux/clk.h>
 #include <linux/mutex.h>
+#include <linux/dma/ipu-dma.h>
 
 #include <linux/platform_data/dma-imx.h>
 #include <mach/hardware.h>
-#include <mach/ipu.h>
 #include <linux/platform_data/video-mx3fb.h>
 
 #include <asm/io.h>