ST Embedded Secure Element (eSE) GPIO

Required properties:
 - compatible: "st,st54spi_gpio"
 - gpio-power_nreset: GPIO pin for reset.

Example:

	st54spi_gpio {
		status = "ok";
		compatible = "st,st54spi_gpio";
		/* gpio used as SE_nRESET */
		gpio-power_nreset = <&tlmm 48 0x00>;
	};
