buildroot

package/network-manager: support WEXT drivers which report mode AUTO

Some wireless drivers report IW_MODE_AUTO instead of IW_MODE_MANAGED.
NetworkManager 1.0.12 introduced a change, which makes it skip such
interfaces.

This patch is a backport of a workaround for this problem from the
NetworkManager upstream.

Signed-off-by: Ilya A. Volynets-Evenbakh <ilya@total-knowledge.com>
[Thomas: add reference to the upstream commit.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>