dt-bindings: imx-ocotp: Add i.MX8MQ compatible

Add compatible for i.MX8MQ and add i.MX7D/S, i.MX7ULP and i.M8MQ
to the description.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>