install plugins in kf<version>

src/kded/CMakeLists.txt

@@ -19,7 +19,7 @@ ki18n_wrap_ui(kded_bluedevil_SRCS
 
 kconfig_add_kcfg_files(kded_bluedevil_SRCS GENERATE_MOC ../settings/filereceiversettings.kcfgc)
 
-kcoreaddons_add_plugin(kded_bluedevil INSTALL_NAMESPACE "kf5/kded" JSON bluedevil.json SOURCES ${kded_bluedevil_SRCS})
+kcoreaddons_add_plugin(kded_bluedevil INSTALL_NAMESPACE "kf${QT_MAJOR_VERSION}/kded" JSON bluedevil.json SOURCES ${kded_bluedevil_SRCS})
 set_target_properties(kded_bluedevil PROPERTIES OUTPUT_NAME bluedevil)
 
 target_link_libraries(kded_bluedevil

src/kio/bluetooth/CMakeLists.txt

@@ -23,5 +23,5 @@ target_include_directories(kio_bluetooth
     PUBLIC $<TARGET_PROPERTY:KF5::BluezQt,INTERFACE_INCLUDE_DIRECTORIES>)
 
 ########### install files ###############
-install(TARGETS kio_bluetooth DESTINATION ${KDE_INSTALL_PLUGINDIR}/kf5/kio)
+install(TARGETS kio_bluetooth DESTINATION ${KDE_INSTALL_PLUGINDIR}/kf${QT_MAJOR_VERSION}/kio)
 install(FILES bluetooth-network.desktop DESTINATION ${KDE_INSTALL_DATADIR}/remoteview)

src/kio/obexftp/CMakeLists.txt

@@ -19,4 +19,4 @@ target_link_libraries(kio_obexftp
     Qt::Network
 )
 
-install(TARGETS kio_obexftp DESTINATION ${KDE_INSTALL_PLUGINDIR}/kf5/kio)
+install(TARGETS kio_obexftp DESTINATION ${KDE_INSTALL_PLUGINDIR}/kf${QT_MAJOR_VERSION}/kio)