more configs and mk files

package/dropbear/Config.in

@@ -5,6 +5,4 @@ config SIMPLE_DROPBEAR
     help
         Embedded ssh server
 
-config SIMPLE_SFTP_SERVER_DROPBEAR
-    bool "Sftp server"
-    depends on SIMPLE_DROPBEAR
+source package/sftp-server-dropbear/Config.in

package/dropbear/dropbear.mk

@@ -0,0 +1,23 @@
+define CMD_CONFIGURE_DROPBEAR
+	$(call msg,configure_dropbear)
+endef
+
+define CMD_BUILD_DROPBEAR
+	$(call msg,build_dropbear)
+endef
+
+define CMD_INSTALL_DROPBEAR
+	$(call msg,install_dropbear)
+endef
+
+define CMD_CONFIGURE_SFTP_SERVER_DROPBEAR
+	$(call msg,configure_sftp_server_dropbear)
+endef
+
+define CMD_BUILD_SFTP_SERVER_DROPBEAR
+	$(call msg,build_sftp_server_dropbear)
+endef
+
+define CMD_INSTALL_SFTP_SERVER_DROPBEAR
+	$(call msg,install_sftp_server_dropbear)
+endef