Convert the APM XGene RTC 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/20250924222848.2949235-1-robh@kernel.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>