mrouted: needs mmu

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/mrouted/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_MROUTED
 	bool "mrouted"
+	depends on BR2_USE_MMU # fork()
 	help
 	  An implementation of the DVMRP multicast routing protocol.