ARM: dts: imx6qdl-vicut1.dtsi: Put nON_SWITCH in own pinctrl grp

Unify nON_SWITCH pinctrl configuration with imx6dl-victgo.dts.

This patch is a preparation to reduce duplicated code between vicut1 and
victgo.

Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>