linux-fslc/defconfig: Add CONFIG_NET_NS=y

systemd in default oe-core configuration complains:

| Sep 11 15:36:33 imx6qdl-variscite-som systemd[1]: Starting Hostname Service...
| Sep 11 15:36:33 imx6qdl-variscite-som systemd[296]: systemd-hostnamed.service: PrivateNetwork=yes is configured, but the kernel does not support network namespaces, ignorin>

To enable it needs CONFIG_NAMESPACES=y either.

Same as [1]

[1] Freescale/linux-fslc#35

Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

recipes-kernel/linux/linux-fslc/defconfig

@@ -6,6 +6,8 @@ CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_LOG_BUF_SHIFT=18
 CONFIG_CGROUPS=y
+CONFIG_NAMESPACES=y
+CONFIG_NET_NS=y
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y