tests: entropy: api: add overlay for Nucleo-WB09KE

Add overlay to allow testing of RNG driver on STM32WB0 hardware.

Signed-off-by: Mathieu Choplain <[email protected]>

Author: Mathieu Choplain

tests/drivers/entropy/api/boards/nucleo_wb09ke.overlay

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2024 STMicroelectronics
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	chosen {
+		zephyr,entropy = &rng;
+	};
+};
+
+&rng {
+	status = "okay";
+};