Capella cm36283 L/P sensor

Required properties:

 - compatible		: Should be "capella,cm36283" or "capella,cm36682".
 - reg				: i2c slave address of the device.
 - interrupt-parent	: Parent of interrupt.
 - interrupts		: L/P sample interrupt to indicate new data ready.
 - vdd-supply		: Power supply needed to power up the device.
 - vio-supply		: IO power supply needed for IO and I2C.
 - capella,interrupt-gpio	: The gpio pin for the interrupt.
 - capella,levels	: The adc value for light sensor to trigger different light level.
 - capella,ps_close_thd_set	: The threshold adc value for proximity sensor to trigger close  interrupt.
 - capella,ps_away_thd_set: The threshold adc value for proximity sensor to trigger away interrupt.
 - capella,ls_cmd	: The initial value to configure cm36283 ALS_CONF register.
 - capella,ps_conf1_val	: The initial value to configure cm36283 PS_CONF1 register.
 - capella,ps_conf3_val	: The initial value to configure cm36283 PS_CONF3 register.

Optional properties:

 - capella,use-polling	: Property to specify if using polling instead of interrupt for adc value report.

Example:

		capella@60 {
				compatible = "capella,cm36283";
				reg = <0x60>;
				interrupt-parent = <&msmgpio>;
				interrupts = <80 0x2>;
				vdd-supply = <&pm8110_l19>;
				vio-supply = <&pm8110_l14>;
				capella,use-polling;
				capella,interrupt-gpio = <80>;
				capella,levels = <0x0A 0xA0 0xE1 0x140 0x280 0x500 0xA28 0x16A8 0x1F40 0x2800>;
				capella,ps_close_thd_set = <0xa>;
				capella,ps_away_thd_set = <0x5>;
				capella,ls_cmd = <0x44>;  /* PS_IT=160ms, INT_PERS=2*/
				capella,ps_conf1_val = <0x0006>;  /*CM36283_PS_ITB_1_2 | CM36283_PS_DR_1_40| CM36283_PS_IT_1T | CM36283_PS_PERS_2 | CM36283_PS_RES_1*/
				capella,ps_conf3_val = <0x3010>;  /* CM36283_PS_MS_NORMAL | CM36283_PS_PROL_255 | CM36283_PS_SMART_PERS_ENABLE, */
		};