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

Include the gpio_irq_api header to fix build failures.

Author: Filip Jagodzinski

components/testing/COMPONENT_FPGA_CI_TEST_SHIELD/test_utils.h

@@ -431,6 +431,7 @@ class DefaultFormFactor {
  */
 
 #if DEVICE_INTERRUPTIN
+#include "gpio_irq_api.h"
 struct GPIOIRQMaps {
     static const PinMap *maps[];
     static const char *const pin_type_names[];