imx: aristainetos: fix build breakage

ipu.h header is not found since the ipuv3 driver was moved to
the drivers/video/imx subdirectory. Fix it.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/board/aristainetos/aristainetos-v2.c b/board/aristainetos/aristainetos-v2.c
index b33a75c..63b1057 100644
--- a/board/aristainetos/aristainetos-v2.c
+++ b/board/aristainetos/aristainetos-v2.c
@@ -33,7 +33,7 @@
 #include <micrel.h>
 #include <spi.h>
 #include <video.h>
-#include <../drivers/video/ipu.h>
+#include <../drivers/video/imx/ipu.h>
 #if defined(CONFIG_VIDEO_BMP_LOGO)
 	#include <bmp_logo.h>
 #endif