Fix feature flags

Author: nerwalt

embassy-nrf/src/ppi/mod.rs

@@ -379,9 +379,7 @@ impl_group!(PPI_GROUP1, 1);
 impl_group!(PPI_GROUP2, 2);
 #[cfg(not(feature = "_nrf54l"))]
 impl_group!(PPI_GROUP3, 3);
-#[cfg(not(feature = "_nrf51"))]
-#[cfg(not(feature = "_nrf54l"))]
+#[cfg(not(any(feature = "_nrf51", feature = "_nrf54l")))]
 impl_group!(PPI_GROUP4, 4);
-#[cfg(not(feature = "_nrf51"))]
-#[cfg(not(feature = "_nrf54l"))]
+#[cfg(not(any(feature = "_nrf51", feature = "_nrf54l")))]
 impl_group!(PPI_GROUP5, 5);