package/mraa: bump to version 2.2.0

- Refresh upstream status of first patch
- Drop second patch (already in version)

https://github.com/eclipse/mraa/blob/v2.2.0/docs/changelog.md



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>