Move positive hash tests into a new test suite

Move hash_finish, hash_verify and hash_multi_part to a
new test suite test_suite_psa_crypto_hash.
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index a7821d7..89be6fe 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -111,6 +111,7 @@
 add_test_suite(pkwrite)
 add_test_suite(poly1305)
 add_test_suite(psa_crypto)
+add_test_suite(psa_crypto_hash)
 add_test_suite(psa_crypto_metadata)
 add_test_suite(shax)
 add_test_suite(ssl)