cmake: Fix list of TF-PSA-Crypto library targets

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 64a390a..1623731 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -379,7 +379,8 @@
     ${TF_PSA_CRYPTO_TARGET_PREFIX}tfpsacrypto)
 
 if(USE_STATIC_MBEDTLS_LIBRARY AND USE_SHARED_MBEDTLS_LIBRARY)
-    list(APPEND tf_psa_crypto_library_targets)
+    list(APPEND tf_psa_crypto_library_targets
+         ${TF_PSA_CRYPTO_TARGET_PREFIX}tfpsacrypto_static)
 endif()
 
 foreach(target IN LISTS tf_psa_crypto_library_targets)