Fix SWI2 IRQ attributes

Author: alexmoon

nrf-softdevice/src/events.rs

@@ -107,21 +107,15 @@ pub(crate) async fn run_ble() -> ! {
     not(any(feature = "nrf52805", feature = "nrf52810", feature = "nrf52811")),
     export_name = "EGU2_SWI2"
 )]
-#[cfg_attr(
-    not(any(feature = "nrf52805", feature = "nrf52810", feature = "nrf52811")),
-    allow(dead_code)
-)]
 unsafe extern "C" fn swi2_irq_handler() {
     SWI2_SOC_EVT_WAKER.wake();
     SWI2_BLE_EVT_WAKER.wake();
 }
 
-/// Support older PACs which use a different name for the SWI2 interrupt
-#[cfg_attr(
-    not(any(feature = "nrf52805", feature = "nrf52810", feature = "nrf52811")),
-    export_name = "SWI2_EGU2"
-)]
+/// `nrf528xx_pac` and early versions of `nrf_pac` name the SWI2 interrupt `SWI2_EGU2` instead of `EGU2_SWI2`
+#[cfg(not(any(feature = "nrf52805", feature = "nrf52810", feature = "nrf52811")))]
 #[allow(dead_code)]
+#[export_name = "SWI2_EGU2"]
 unsafe extern "C" fn old_swi2_irq_handler() {
     SWI2_SOC_EVT_WAKER.wake();
     SWI2_BLE_EVT_WAKER.wake();