aiccu: needs mmu

Fixes:
http://autobuild.buildroot.net/results/549/549bc89aeaa0ebf9162fc5853cb637f4f70d0b51/

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/aiccu/Config.in

@@ -3,6 +3,7 @@ config BR2_PACKAGE_AICCU
 	depends on BR2_INET_IPV6
 	depends on BR2_USE_WCHAR
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_GNUTLS
 	help
 	  SixXS Automatic IPv6 Connectivity Client Utility