fix Makefile for demo mode
fix Makefile for demo mode

mayqueenRD/OpenVG_Rasbian_UI,chappyhome/openvg,superjudge/openvg,chappyhome/openvg,mayqueenRD/OpenVG_Rasbian_UI,superjudge/openvg,superjudge/openvg,chappyhome/openvg,superjudge/openvg,mayqueenRD/OpenVG_Rasbian_UI,chappyhome/openvg