Test: FPGA shield: Fix GPIO-IRQ test_utils.h

Include the gpio_irq_api header to fix build failures.

components/testing/COMPONENT_FPGA_CI_TEST_SHIELD/test_utils.h

@@ -441,6 +441,7 @@ const char *const GPIOMaps::name = "GPIO";
 typedef Port<1, GPIOMaps, DefaultFormFactor, TF1> GPIOPort;
 
 #if DEVICE_INTERRUPTIN
+#include "gpio_irq_api.h"
 struct GPIOIRQMaps {
     static const PinMap *maps[];
     static const char *const pin_type_names[];