dt-bindings: clock: Convert alphascale,asm9260-clock-controller to DT schema

dt-bindings: clock: Convert alphascale,asm9260-clock-controller to DT schema

Convert the Alphascale Clock Controller binding to DT schema format.
Add the undocumented 'clocks' property which is used in DTS. Drop the
clock defines and consumer examples from the old binding.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250521004712.1793193-1-robh@kernel.org
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>