Renamed MBEDTLS_PSA_CRYPTO_CONFIG_FILE & MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE

Files have been renamed respectively to:
- TF_PSA_CRYPTO_CONFIG_FILE
- TF_PSA_CRYPTO_USER_CONFIG_FILE

As per design proposal:
https://github.com/Mbed-TLS/mbedtls/blob/development/docs/proposed/config-split.md

Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 64d95dc..c5d19af 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -333,11 +333,11 @@
     endif()
     if(TF_PSA_CRYPTO_CONFIG_FILE)
         target_compile_definitions(${target}
-            PUBLIC MBEDTLS_PSA_CRYPTO_CONFIG_FILE="${TF_PSA_CRYPTO_CONFIG_FILE}")
+            PUBLIC TF_PSA_CRYPTO_CONFIG_FILE="${TF_PSA_CRYPTO_CONFIG_FILE}")
     endif()
     if(TF_PSA_CRYPTO_USER_CONFIG_FILE)
         target_compile_definitions(${target}
-            PUBLIC MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE="${TF_PSA_CRYPTO_USER_CONFIG_FILE}")
+            PUBLIC TF_PSA_CRYPTO_USER_CONFIG_FILE="${TF_PSA_CRYPTO_USER_CONFIG_FILE}")
     endif()
 endfunction(set_config_files_compile_definitions)