Qualcomm UART (Data Mover mode)

Required properties:
- compatible: must be "qcom,msm-uartdm-v1.4"
- reg: start address and size of the registers
- clock: interface clock (must accept baudrate as a frequency)

Optional properties:
- bit-rate: Data Mover bit rate register value
			(If not defined then 0xCC is used as default)