imxgpio_pin_write
gp->gp_pin_write = imxgpio_pin_write;
gp->gp_pin_write = imxgpio_pin_write;
imxgpio_pin_write(imxgpio_handles[index], pin, value);
void imxgpio_pin_write(void *, int, int);
imxgpio_pin_write(sc, gpin->pin_no, val);