netifd: update to latest version, adds fixes and some preparation for supporting wifi devices

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38606 3c298f89-4303-0410-b956-a3cf2f4a3e73
libubox: update to latest version, makes jshn roughly twice as fast

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38607 3c298f89-4303-0410-b956-a3cf2f4a3e73