net: Move config NET_NS to from net/Kconfig to init/Kconfig

Make NET_NS available underneath the generic Namespaces config option
since all of the other namespace options are there.
Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

init/Kconfig

@@ -541,6 +541,14 @@ config PID_NS
 	  Unless you want to work with an experimental feature
 	  say N here.
 
+config NET_NS
+	bool "Network namespace"
+	default n
+	depends on NAMESPACES && EXPERIMENTAL && NET
+	help
+	  Allow user space to create what appear to be multiple instances
+	  of the network stack.
+
 config BLK_DEV_INITRD
 	bool "Initial RAM filesystem and RAM disk (initramfs/initrd) support"
 	depends on BROKEN || !FRV

net/Kconfig

@@ -24,14 +24,6 @@ if NET
 
 menu "Networking options"
 
-config NET_NS
-	bool "Network namespace support"
-	default n
-	depends on EXPERIMENTAL && NAMESPACES
-	help
-	  Allow user space to create what appear to be multiple instances
-	  of the network stack.
-
 config COMPAT_NET_DEV_OPS
        def_bool y