noip: needs mmu

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/noip/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_NOIP
 	bool "noip"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Dynamic DNS update client for no-ip.com