Enable invalid param test in sha256

Signed-off-by: Tuvshinzaya Erdenekhuu <tuvshinzaya.erdenekhuu@arm.com>
diff --git a/tests/suites/test_suite_shax.function b/tests/suites/test_suite_shax.function
index 95d45ba..58d0254 100644
--- a/tests/suites/test_suite_shax.function
+++ b/tests/suites/test_suite_shax.function
@@ -18,7 +18,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SHA256_C:NOT_DEFINED */
+/* BEGIN_CASE depends_on:MBEDTLS_SHA256_C */
 void sha256_invalid_param( )
 {
     mbedtls_sha256_context ctx;