net: l2: wifi: Allow overriding test certs directory

Add support to set the test certificates directory for enterprise
mode when an external certs directory is provided at build time.
This change overrides the default certs folder if a different path
is specified during build.

This change is needed for sysbuild, the build already works as
expected without it.

Signed-off-by: Triveni Danda <[email protected]>

Author: D-Triveni

subsys/net/l2/wifi/CMakeLists.txt

@@ -28,6 +28,8 @@ if(CONFIG_WIFI_NM_WPA_SUPPLICANT_CRYPTO_ENTERPRISE AND CONFIG_NET_L2_WIFI_SHELL)
   # Wi-Fi Enterprise test certificates handling
   set(gen_inc_dir ${ZEPHYR_BINARY_DIR}/misc/generated)
   set(gen_dir ${gen_inc_dir}/wifi_enterprise_test_certs)
+  zephyr_get(WIFI_TEST_CERTS_DIR SYSBUILD GLOBAL)
+  message("WIFI_TEST_CERTS_DIR is set to ${WIFI_TEST_CERTS_DIR}")
   if(NOT DEFINED WIFI_TEST_CERTS_DIR)
     set(WIFI_TEST_CERTS_DIR ${ZEPHYR_BASE}/samples/net/wifi/test_certs/rsa3k)
   endif()