dt-bindings: Add DT bindings for hbtp_input

Platform device for Host Based Touch Processing (HBTP)

hbtp_input is a kernel driver that provides functionality needed by

Host Based Touch Processing (HBTP) from the kernel. One of the

functionality is to manage the power source for touch Analog Front

End (AFE).

Required properties:

 - compatible		: should be "qcom,hbtp-input"

Optional properties:

 - vcc_ana-supply	: Analog power supply needed to power device

 - qcom,afe-load	: AFE/Analog supply load in uA

 - qcom,afe-vtg-min	: AFE/Analog minimum voltage in uV

 - qcom,afe-vtg-max	: AFE/Analog maximum voltage in uV

 - qcom,dig-load	: Digital supply load in uA

 - qcom,dig-vtg-min	: Digital supply minimum voltage in uV

 - qcom,dig-vtg-max	: Digital supply maximum voltage in uV

 - qcom,display-resolution	: Display resolution - maxX, maxY

 - qcom,use-scale	: boolean, enables the scaling for touch coordinates

 - pinctrl-names	: defines pinctrl names

			"pmx_ts_active" : Required pinctrl name.

				This should specify active config of TS RST gpio

			"pmx_ts_suspend" : Required pinctrl name

				This should specify suspend config of TS RST gpio

			"ddic_rst_active" : Required pinctrl name

				This should specify active config of DDIC RST gpio

			"ddic_rst_suspend" : Required pinctrl name

				This should specify suspend config of DDIC RST gpio

 - pinctrl-0		: pin control to be used for TS active config

 - pinctrl-1		: pin control to be used for TS suspend config

 - pinctrl-2		: pin control to be used for DDIC active config

 - pinctrl-3		: pin control to be used for DDIC suspend config

Optional properties if qcom,use-scale DT property is defined:

 - qcom,def-maxx	: default X-resolution of the touch panel.

 - qcom,def-maxy	: default Y-resolution of the touch panel.

			(Above two properties should be defined in pairs only)

 - qcom,des-maxx	: desired X-resolution of the touch panel.

 - qcom,des-maxy	: desired Y-resolution of the touch panel.

			(Above two properties should be defined in pairs only)

Optional Properties if pinctrl names are defined:

 - qcom,pmx-ts-on-seq-delay-us : unsigned integer type for

		delay after active TS RST gpio is changed

 - qcom,fb-resume-delay-us : unsigned integer type for

		delay in early resume framebuffer callback

 - qcom,ddic-rst-on-seq-delay-us : array of unsigned integer type for

		delay of each step in series of DDIC RST gpio control

Optional Properties if qcom,afe-vtg and qcom,dig-vtg are defined

 - qcom,afe-power-on-delay-us : unsigned integer type for

		delay between turning on analog and digital power supply

 - qcom,afe-power-off-delay-us : unsigned integer type for

		delay between turning off digital and analog power supply

Example:

	&soc {

		hbtp {

			compatible = "qcom,hbtp-input";

			vcc_ana-supply = <&pm8941_l17>;

			vcc_dig-supply = <&pm8950_l16>;

			qcom,afe-load = <50000>;

			qcom,afe-vtg-min = <2850000>;

			qcom,afe-vtg-max = <2850000>;

			qcom,dig-load = <15000>;

			qcom,dig-vtg-min = <1800000>;

			qcom,dig-vtg-max = <1800000>;

			qcom,display-resolution = <719 1279>;

			qcom,use-scale;

			qcom,default-max-x = <1080>;

			qcom,default-max-y = <1920>;

			qcom,desired-max-x = <720>;

			qcom,desired-max-y = <1280>;

			pinctrl-names = "pmx_ts_active","pmx_ts_suspend",

					"ddic_rst_active", "ddic_rst_suspend";

			pinctrl-0 = <&ts_rst_active>;

			pinctrl-1 = <&ts_rst_suspend>;

			pinctrl-2 = <&ddic_rst_active>;

			pinctrl-3 = <&ddic_rst_suspend>;

			qcom,pmx-ts-on-seq-delay-us = <1000>;

			qcom,ddic-rst-on-seq-delay-us = <10000 10000 10000 10000>;

			qcom,fb-resume-delay-us = <90000>;

			qcom,afe-power-on-delay-us = <1000>;

			qcom,afe-power-off-delay-us = <6>;

		};

	};