ffho-autoupdater: set PROVIDES:=gluon-autoupdater in Makefile

because gluon-config-mode-autoupdater and gluon-luci-autoupdater depending on gluon-autoupdater

ffho/ffho-autoupdater/Makefile

@@ -14,6 +14,7 @@ define Package/ffho-autoupdater
   CATEGORY:=Gluon
   DEPENDS:=+gluon-core +libgluonutil +micrond +autoupdater
   TITLE:=Automatically update firmware
+  PROVIDES:=gluon-autoupdater
 endef
 
 define Build/Prepare
@@ -38,4 +39,4 @@ define Package/ffho-autoupdater/postinst
 $(call GluonCheckSite,check_site.lua)
 endef
 
-$(eval $(call BuildPackage,ffho-autoupdater))
+$(eval $(call BuildPackage,ffho-autoupdater))