Add unit test for integer overflow in mbedtls_mps_reader_reclaim()

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/tests/suites/test_suite_mps.data b/tests/suites/test_suite_mps.data
index f25d703..442f321 100644
--- a/tests/suites/test_suite_mps.data
+++ b/tests/suites/test_suite_mps.data
@@ -120,3 +120,6 @@
 
 MPS Reader: Feed with invalid buffer (NULL)
 mbedtls_mps_reader_feed_empty:
+
+MPS Reader: Excess request leading to integer overflow
+mbedtls_mps_reader_reclaim_overflow: