arm64: dts: apm: Clean-up clock bindings

arm64: dts: apm: Clean-up clock bindings

Clean-up a couple of clock binding related issues in the the X-Gene DTS.

CPU and I2C nodes aren't clock providers and shouldn't have
"#clock-cells" properties.

A fixed-clock only provides 1 clock, so "#clock-cells" must be 0. The
preferred node name is "clock-<freq>" as well.

The "type" property is undocumented and unused, so drop it.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250910223020.612244-2-robh@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>