net: Fix leaving NET_MAX_6LO_CONTEXTS set when 6lowpan deselected

Make NET_MAX_6LO_CONTEXTS depends on NET_6LO_CONTEXT, otherwise at the
moment even deselecting 6lowpan leaves NET_MAX_6LO_CONTEXTS set.

Change-Id: Iaa34d324005817be05190e203f6899ab89f89e5d
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
1 file changed