Update .gitignore

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/.gitignore b/.gitignore
index 06904fa..455440f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,4 +27,5 @@
 
 tests/sms/sms_test
 tests/timer/timer_test
-
+tests/msgfile/msgfile_test
+tests/ussd/ussd_test