Fixed GPIOTE interrupt priority

Priority 1 is reserved by the SoftDevice and shall not be used by application code

cores/nRF5/WInterrupts.c

@@ -42,7 +42,7 @@ static void __initialize()
 
   NVIC_DisableIRQ(GPIOTE_IRQn);
   NVIC_ClearPendingIRQ(GPIOTE_IRQn);
-  NVIC_SetPriority(GPIOTE_IRQn, 1);
+  NVIC_SetPriority(GPIOTE_IRQn, 2);
   NVIC_EnableIRQ(GPIOTE_IRQn);
 }