drivers/dma: Add module.h to files implicitly using it.

Fix files that were implicitly using module.h but not
calling it out for inclusion directly.  We'll break those
once we remove the implicit presence otherwise

[With input from Uwe Kleine-König <u.kleine-koenig@pengutronix.de>]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

drivers/dma/imx-dma.c

@@ -23,6 +23,7 @@
 #include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/dmaengine.h>
+#include <linux/module.h>
 
 #include <asm/irq.h>
 #include <mach/dma-v1.h>

drivers/dma/imx-sdma.c

@@ -34,6 +34,7 @@
 #include <linux/dmaengine.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/module.h>
 
 #include <asm/irq.h>
 #include <mach/sdma.h>

drivers/dma/ipu/ipu_idmac.c

@@ -21,6 +21,7 @@
 #include <linux/string.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
+#include <linux/module.h>
 
 #include <mach/ipu.h>