znc: not available on !MMU systems, uses fork()

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/znc/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_ZNC
 	bool "znc"
 	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_USE_MMU # fork()
 	help
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@@ -8,3 +9,4 @@ config BR2_PACKAGE_ZNC
 
 comment "znc needs a toolchain w/ C++"
 	depends on !BR2_INSTALL_LIBSTDCPP
+	depends on BR2_USE_MMU