add list of supported arch's to spk makefile
add list of supported arch's to spk makefile

GaetanCambier/spksrc,GaetanCambier/spksrc,GaetanCambier/spksrc,GaetanCambier/spksrc,GaetanCambier/spksrc,GaetanCambier/spksrc,GaetanCambier/spksrc,GaetanCambier/spksrc,GaetanCambier/spksrc