video: Add module.h to drivers/video files who really use it.

They were getting this implicitly by an include of module.h
from device.h -- but we are going to clean that up and break
that include chain, so include module.h explicitly now.

[ with contributions from Axel Lin <axel.lin@gmail.com> ]

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index 43c04a9..5abf8e7e 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -27,6 +27,7 @@
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/mutex.h>
+#include <linux/module.h>
 #include <linux/semaphore.h>
 #include <linux/seq_file.h>
 #include <linux/platform_device.h>