kconfig_compiler : generate kconfig settings with subgroup
Summary: Following D27059, add parentGroupName attribute to group element to generate kconfig settings with subgroups
Reviewers: ervin, dfaure, Frameworks, meven
Reviewed By: ervin, meven
Subscribers: apol, meven, kde-frameworks-devel
Tags: Frameworks
Differential Revision: https://phabricator.kde.org/D27133