Fix test dependency

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/tests/suites/test_suite_shax.function b/tests/suites/test_suite_shax.function
index 0468f72..326cc79 100644
--- a/tests/suites/test_suite_shax.function
+++ b/tests/suites/test_suite_shax.function
@@ -166,7 +166,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE */
+/* BEGIN_CASE depends_on:MBEDTLS_SHA3_C */
 void sha3_invalid_param()
 {
     unsigned char output[32];