The DSS controller on TI's AM62A7 SoC is an update from that on TI's
AM625 SoC. Like the DSS in AM625, the DSS in this SoC has 2 video
pipelines, but unlike the former, the latter only has one output port on
VP2 to service DPI display sinks.

Add the new controller's compatible.
Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://lore.kernel.org/r/20231108171619.978438-2-a-bhatia1@ti.comSigned-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>