arm64: dts: actions: Source CMU clock for UART5 Remove fixed clock and source CMU (Clock Management Unit) clock for UART5 driver in Actions Semi S900 SoC. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Andreas Färber <afaerber@suse.de>