Fix build of breeze-icons on the Android CI

Summary:
At the moment we are compiling the tool against android then trying to
execute it, which obviously doesn't work. Building locally would require
having native Qt available and further changes in the code.

Reviewers: Frameworks, Plasma, kfunk

Reviewed By: kfunk

Subscribers: kfunk, plasma-devel

Tags: Plasma, Frameworks

Differential Revision: https://phabricator.kde.org/D8264