Allow wpa_supplicant to read security logging property.

This is needed to allow it to log audit events, e.g. cert
validation failure.

Bug: 70886042
Test: manual, attempt connecting to EAP-TLS wifi with bad cert.
Change-Id: Ia1b0f3c6e02697fdb5018082d5c851f116013fb1

vendor/hal_wifi_supplicant_default.te

@@ -16,3 +16,6 @@ binder_call(hal_wifi_supplicant_default, wifi_keystore_service_server)
 allow hal_wifi_supplicant_default wpa_data_file:dir create_dir_perms;
 allow hal_wifi_supplicant_default wpa_data_file:file create_file_perms;
 allow hal_wifi_supplicant_default wpa_data_file:sock_file create_file_perms;
+
+# Write to security logs for audit.
+get_prop(hal_wifi_supplicant_default, device_logging_prop)