Add tests for mbedtls_xor

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/tests/suites/test_suite_common.data b/tests/suites/test_suite_common.data
new file mode 100644
index 0000000..500852d
--- /dev/null
+++ b/tests/suites/test_suite_common.data
@@ -0,0 +1,20 @@
+Block xor, length 0
+mbedtls_xor:0
+
+Block xor, length 1
+mbedtls_xor:1
+
+Block xor, length 3
+mbedtls_xor:3
+
+Block xor, length 4
+mbedtls_xor:4
+
+Block xor, length 7
+mbedtls_xor:7
+
+Block xor, length 8
+mbedtls_xor:8
+
+Block xor, length 16
+mbedtls_xor:16