tests: fix some guards

psa_crypto_helpers: to include "psa_helpers.h" as soon as CRYPTO_CLIENT
is enabled.

test_suite_psa_crypto_low_hash: add MBEDTLS_PSA_CRYPTO_C as dependency
for test functions.

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/tests/include/test/psa_crypto_helpers.h b/tests/include/test/psa_crypto_helpers.h
index 9a84335..c504bb2 100644
--- a/tests/include/test/psa_crypto_helpers.h
+++ b/tests/include/test/psa_crypto_helpers.h
@@ -11,7 +11,7 @@
 
 #include "test/helpers.h"
 
-#if defined(MBEDTLS_PSA_CRYPTO_C)
+#if defined(MBEDTLS_PSA_CRYPTO_CLIENT)
 #include "test/psa_helpers.h"
 #include <psa/crypto.h>
 #endif
diff --git a/tests/suites/test_suite_psa_crypto_low_hash.function b/tests/suites/test_suite_psa_crypto_low_hash.function
index 6dabcef..eaeef79 100644
--- a/tests/suites/test_suite_psa_crypto_low_hash.function
+++ b/tests/suites/test_suite_psa_crypto_low_hash.function
@@ -18,7 +18,7 @@
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES
- * depends_on:MBEDTLS_PSA_BUILTIN_HASH
+ * depends_on:MBEDTLS_PSA_CRYPTO_C:MBEDTLS_PSA_BUILTIN_HASH
  * END_DEPENDENCIES
  */