kernel/3.1{3, 4}: fix IFF_NO_IP_ALIGN flag location

Fix IFF_NO_IP_ALIGN location which is collide with new netdev private flag
IFF_MACVLAN.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41992 3c298f89-4303-0410-b956-a3cf2f4a3e73