This patch fixes the wrongly included dtsi file which
was breaking mainline support for Engicam i.CoreM6 DualLite/Solo RQS.

As per the board name, the correct file should be imx6dl.dtsi instead
of imx6q.dtsi
Reported-by: NMichael Trimarchi <michael@amarulasolutions.com>
Suggested-by: NJagan Teki <jagan@amarulasolutions.com>
Signed-off-by: NShyam Saini <shyam@amarulasolutions.com>
Reviewed-by: NFabio Estevam <fabio.estevam@nxp.com>
Fixes: 7a9caba5 ("ARM: dts: imx6dl: Add Engicam i.CoreM6 DualLite/Solo RQS initial support")
Signed-off-by: NShawn Guo <shawnguo@kernel.org>