video: Fix typo in drivers/video

Correct spelling typo in debug messages and comments
within drivers/video.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index d99505b..1505539 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -939,7 +939,7 @@
 		 * up a splash image.
 		 */
 	} else {
-		/* alocate memory buffer */
+		/* allocate memory buffer */
 		ret = atmel_lcdfb_alloc_video_memory(sinfo);
 		if (ret < 0) {
 			dev_err(dev, "cannot allocate framebuffer: %d\n", ret);