Update PSA init for md-ligt

Also initialize PSA in builds where hashes are PSA-only, for the sake of
encrypted keys (otherwise PBKDF fails).

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/suites/test_suite_pkparse.function b/tests/suites/test_suite_pkparse.function
index a334fe8..43dcea5 100644
--- a/tests/suites/test_suite_pkparse.function
+++ b/tests/suites/test_suite_pkparse.function
@@ -115,7 +115,7 @@
     int res;
 
     mbedtls_pk_init(&ctx);
-    USE_PSA_INIT();
+    MD_PSA_INIT();
 
     res = mbedtls_pk_parse_keyfile(&ctx, key_file, password,
                                    mbedtls_test_rnd_std_rand, NULL);
@@ -134,7 +134,7 @@
 
 exit:
     mbedtls_pk_free(&ctx);
-    USE_PSA_DONE();
+    MD_PSA_DONE();
 }
 /* END_CASE */