Use minimal include in test_suite_random

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/tests/suites/test_suite_random.function b/tests/suites/test_suite_random.function
index 22c6d43..0df92b0 100644
--- a/tests/suites/test_suite_random.function
+++ b/tests/suites/test_suite_random.function
@@ -7,7 +7,7 @@
 #include "mbedtls/ecdsa.h"
 #include "mbedtls/entropy.h"
 #include "mbedtls/hmac_drbg.h"
-#include "psa_util_internal.h"
+#include "mbedtls/psa_util.h"
 #include "psa/crypto.h"
 
 /* How many bytes to generate in each test case for repeated generation.