* ELAN Resistive Touch Controller

Required properties:
- compatible: must be "elan,elan-touch"
- reg: i2c slave address
- interrupt-parent: the phandle for the interrupt controller
- interrupts: touch controller interrupt
- gpio_elan_cs: the gpio pin for chip select
- gpio_elan_rst: the gpio pin for chip reset
- gpio_intr: the gpio pin to be used for interrupt pin

Example:

	elan@10 {
		compatible = "elan,elan-touch";
		reg = <0x10>;
		interrupt-parent = <&gpio3>;
		interrupts = <28 3>;
		gpio_elan_cs = <&gpio2 18 0>;
		gpio_elan_rst = <&gpio3 8 0>;
		gpio_intr = <&gpio3 28 0>;
		status = "okay";
	};