modules: nrf_wifi: Fix license

Fix the license type to Apache 2.0, it was a left over during
transition from BSD.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>

modules/nrf_wifi/bus/CMakeLists.txt

@@ -1,7 +1,7 @@
 #
 # Copyright (c) 2024 Nordic Semiconductor ASA
 #
-# SPDX-License-Identifier: BSD-3-Clause
+# SPDX-License-Identifier: Apache-2.0
 #
 
 # Check if ZEPHYR_BASE is set