KconfigXT: Add a value attribute to Enum field choices
Summary:
Allow to write choices such as :
<choices> <choice name="enum_name" value="I can't containt (anything)"></choice> <choice name="normal_choice"></choice> </choices>
Test Plan: ctest
Reviewers: ervin, bport, crossi, Frameworks
Reviewed By: ervin
Subscribers: ngraham, davidre, kde-frameworks-devel
Tags: Frameworks
Differential Revision: https://phabricator.kde.org/D27463