dt-bindings: clock: Convert marvell,dove-divider-clock to DT schema

dt-bindings: clock: Convert marvell,dove-divider-clock to DT schema

Convert the Marvell Dove PLL divider clock binding to DT schema format.
It's a straight forward conversion.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250521210832.62177-1-robh@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>