Constantify function parameters
Summary: Even though constantifying these parameters won't change anything(since they are being passed by value), it is done to assure they conform to rest of the coding style
Reviewers: stikonas, cjlcarvalho, KDE Partition Manager
Reviewed By: cjlcarvalho
Subscribers: KDE Partition Manager
Tags: KDE Partition Manager
Differential Revision: https://phabricator.kde.org/D20106