ubus: backport latest version from trunk

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

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@36768 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: uml: remove obsolete patch breaking compilation

This is now handled by a generic, more complete patch.

Reported-by: Markus Stenberg <markus.stenberg@iki.fi>
Signed-off-by: Jonas Gorski <jogo@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@36769 3c298f89-4303-0410-b956-a3cf2f4a3e73