arm64: dts: broadcom: stingray: Rework clock nodes

arm64: dts: broadcom: stingray: Rework clock nodes

The stringray-clocks.dtsi is oddly included in the middle of a bus
node and is only included in one place, so collapse it into
stingray.dtsi. Move the fixed and fixed-factor clock nodes to the root
as they are not part of the bus. Rename the node names to use preferred
names.

Drop the unnecessary 1:1 fixed-factor clock providers.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20260106-dt-dtbs-broadcom-fixes-v1-5-ba45874e4553@kernel.org
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>