qgroundcontrol: update to 2.02

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
README.md: document meta-qt5 dependency

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
QtSerialPort: import 5.1.1

This is needed to build against a 'dora' meta-qt5.

Based on the 5.1.0 recipe in meta-qt5

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
taulabs-uavobjectgenerator: add git version

This is needed to generate the bindings to taulabs based apps.

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>