arm64: dts: marvell: espressobin-ultra: add generic Espressobin compatible

Espressobin Ultra is part of the Espressobin family and shares the basic
design, so add the generic "globalscale,espressobin" compatible to it as
well.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>