Also, make them public, because otherwise `unused` linter complains.
```
pkg/morph/event/utils.go:25:2 unused field `typ` is unused
```
This complain is wrong, though: we _use_ `typ` field because the whole
struct is used as a map key.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
