video: Rename CONFIG_VIDEO_MX5

Rename CONFIG_VIDEO_MX5 as this driver can also be used on mx6.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/include/configs/vision2.h b/include/configs/vision2.h
index 24905a0..919f5ce 100644
--- a/include/configs/vision2.h
+++ b/include/configs/vision2.h
@@ -212,7 +212,7 @@
  */
 #define CONFIG_PREBOOT
 #define CONFIG_VIDEO
-#define CONFIG_VIDEO_MX5
+#define CONFIG_VIDEO_IPUV3
 #define CONFIG_CFB_CONSOLE
 #define CONFIG_VGA_AS_SINGLE_DEVICE
 #define CONFIG_VIDEO_BMP_RLE8