This reverts commit 
0dc23d1a8e17, which caused another regression
as the pinctrl code actually expects an integer value of 0 or 1
rather than a simple boolean property.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
                pinctrl_pio_io_reset: gpio_io_reset {
                        pinmux = <PIN_PB30__GPIO>;
                        bias-disable;
-                       drive-open-drain;
+                       drive-open-drain = <1>;
                        output-low;
                };
                pinctrl_pio_input: gpio_input {
 
                pinmux = <PIN_PD12__FLEXCOM4_IO0>, //DATA
                <PIN_PD13__FLEXCOM4_IO1>; //CLK
                bias-disable;
-               drive-open-drain;
+               drive-open-drain = <1>;
        };
 
        pinctrl_pwm0 {