refactored GPIO to support callbacks

bsp_rpi/gpio/GPIORPi.cpp

@@ -10,7 +10,7 @@ ReturnValue_t gpio::createRpiGpioConfig(GpioCookie* cookie, gpioId_t gpioId, int
         return HasReturnvaluesIF::RETURN_FAILED;
     }
 
-    GpioConfig_t config;
+    GpiodRegular config;
     /* Default chipname for Raspberry Pi. There is still gpiochip1 for expansion, but most users
     will not need this */
     config.chipname = "gpiochip0";