Fix qt6 support

mobile/CMakeLists.txt

@@ -15,13 +15,13 @@ set(DESKTOPFILE_INSTALL ${KDE_INSTALL_APPDIR})
 if(ANDROID)
 #   Material requires QtSvg for icons
 #   if we don't link it here explicitly, androiddeployqt doesn't bring it
-    find_package(Qt5Svg REQUIRED)
-    find_package(Qt5QuickControls2 REQUIRED)
+    find_package(Qt${QT_MAJOR_VERSION}Svg REQUIRED)
+    find_package(Qt${QT_MAJOR_VERSION}QuickControls2 REQUIRED)
     find_package(KF5Kirigami2 REQUIRED)
     kirigami_package_breeze_icons(ICONS list-add)
     target_link_libraries(kalgebramobile Qt::Svg KF5::Kirigami2 Qt::QuickControls2)
 else()
-    find_package(Qt5Widgets REQUIRED)
+    find_package(Qt${QT_MAJOR_VERSION}Widgets REQUIRED)
     target_link_libraries(kalgebramobile Qt::Widgets)
 endif()