gitignore: add gsup_test, tlv_test

Change-Id: Ied1cbc7a48bdbc3696e9d8657285071c377d6de5
Reviewed-on: https://gerrit.osmocom.org/207
Tested-by: Jenkins Builder
Reviewed-by: Holger Freyther <holger@freyther.de>
1 file changed