media: dt-bindings: media: nxp, imx8mq-vpu: Add support for G1 on imx8mm

The i.MX8M mini appears to have a similar G1 decoder but the
post-processing isn't present, so different compatible flag is required.
Since all the other parameters are the same with imx8mq, just add
the new compatible flag to nxp,imx8mq-vpu.yaml.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>