Texas Instruments TWL series PWM drivers

Supported PWMs:
On TWL4030 series: PWM1 and PWM2
On TWL6030 series: PWM0 and PWM1

Required properties:
- compatible: "ti,twl4030-pwm" or "ti,twl6030-pwm"
- #pwm-cells: should be 2.  The first cell specifies the per-chip index
  of the PWM to use and the second cell is the period in nanoseconds.

Example:

twl_pwm: pwm {
	compatible = "ti,twl6030-pwm";
	#pwm-cells = <2>;
};