MAINTAINERS: change colibri_imx6/imx6ull/t30/vf maintainers

Take over maintainership for colibri_imx6/imx6ull/t30/vf modules.

Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Stefan Agner <stefan.agner@toradex.com>
diff --git a/board/toradex/colibri_t30/MAINTAINERS b/board/toradex/colibri_t30/MAINTAINERS
index 73b8e5d..00c03c8 100644
--- a/board/toradex/colibri_t30/MAINTAINERS
+++ b/board/toradex/colibri_t30/MAINTAINERS
@@ -1,5 +1,5 @@
 Colibri T30
-M:	Stefan Agner <stefan.agner@toradex.com>
+M:	Igor Opaniuk <igor.opaniuk@toradex.com>
 S:	Maintained
 F:	board/toradex/colibri_t30/
 F:	include/configs/colibri_t30.h