dts: infineon: psc3m5 devicetree changes to support HPPASS ADC * Separates HPPASS and HPPASS SAR ADC in the device tree * Makes HPPASS SAR ADC a child of the HPPASS system to reflect hardware architecture. * Adds binding files for HPPASS SAR ADC driver. Signed-off-by: John Batch <john.batch@infineon.com>