dt-bindings: phy: marvell,armada-3700-utmi-host-phy: Fix incorrect compatible in example

Fix the example using the incorrect compatible string.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220422192054.2591093-1-robh@kernel.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>