Add new test for invalid param in pk.c

Signed-off-by: Tuvshinzaya Erdenekhuu <tuvshinzaya.erdenekhuu@arm.com>
diff --git a/tests/suites/test_suite_pk.data b/tests/suites/test_suite_pk.data
index e8cc076..3dc2b8b 100644
--- a/tests/suites/test_suite_pk.data
+++ b/tests/suites/test_suite_pk.data
@@ -1,3 +1,6 @@
+PK invalid parameters
+pk_invalid_param:
+
 PK valid parameters
 valid_parameters: