makefile: fix kwm-overlay linker rpath
makefile: fix kwm-overlay linker rpath

a-morales/kwm,a-morales/kwm,akdor1154/kwm,akdor1154/kwm,koekeishiya/kwm,cHoco/kwm,koekeishiya/kwm,cHoco/kwm,a-morales/kwm,koekeishiya/kwm,akdor1154/kwm,cHoco/kwm