distribution.conf: CONFIG_IPV6=m

Now that the android topic is fixed, CONFIG_IPV6=y is no longer needed.

Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
diff --git a/linaro/configs/distribution.conf b/linaro/configs/distribution.conf
index e7bd737..b4f9f8f 100644
--- a/linaro/configs/distribution.conf
+++ b/linaro/configs/distribution.conf
@@ -5,7 +5,7 @@
 CONFIG_SECCOMP=y
 CONFIG_CC_STACKPROTECTOR_REGULAR=y
 CONFIG_SYN_COOKIES=y
-CONFIG_IPV6=y
+CONFIG_IPV6=m
 CONFIG_NETLABEL=y
 CONFIG_BRIDGE_NETFILTER=y
 CONFIG_NF_CONNTRACK=m