ftdi_ft4222.c: Fixed bug in gpio configuration

Signed-off-by: Henry Bruce <henry.bruce@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

src/usb/ftdi_ft4222.c

@@ -526,6 +526,7 @@ mraa_ftdi_ft4222()
         sprintf(name, "Pin%d", pinIndex);
         strncpy(sub_plat->pins[pinIndex].name, name, 8);
         sub_plat->pins[pinIndex].capabilites = pinCapsGpio;
+        sub_plat->pins[pinIndex].gpio.mux_total = 0;
     }
 
     int bus = 0;