dt-bindings: clock: Convert marvell,armada-370-corediv-clock to DT schema

dt-bindings: clock: Convert marvell,armada-370-corediv-clock to DT schema

Convert the Marvell Armada 3xx Core Divider clock binding to DT schema
format.

Add the missing "marvell,armada-390-corediv-clock" compatible and
"clock-output-names" property.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250521211840.77487-1-robh@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>