PRU GPIO2_1 input test

/*
* pru dts file cape-bone-mytest-00A0.dts
*/
/dts-v1/;
/plugin/;

/ {
  compatible = "ti,beaglebone", "ti,beaglebone-black";

  /* identification */
  part-number = "BB-BONE-MYTEST";
  version = "00A0";

  fragment@0 {
    target = <&am33xx_pinmux>;
    __overlay__ {
			mygpio: pinmux_mygpio{
				pinctrl-single,pins = <
					0x8c 0x2f
				>;
      };

    };

  };

  fragment@2{
  target = <&pruss>;
    __overlay__ {
      status = "okay";
    };
  };
};