arm64: dts: amlogic: Add Amlogic S4 PWM

Add device nodes for PWM_AB, PWM_CD, PWM_EF, PWM_GH and PWM_IJ
along with GPIO PIN configs of each channel.

Signed-off-by: Junyi Zhao <junyi.zhao@amlogic.com>
Reviewed-by: George Stark <gnstark@salutedevices.com>
Signed-off-by: Kelvin Zhang <kelvin.zhang@amlogic.com>
Link: https://lore.kernel.org/r/20240613-s4-pwm-v8-2-b5bd0a768282@amlogic.com


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>