systemd: update to systemd-212

Signed-off-by: Stephan Raue <stephan@openelec.tv>
busybox: add ddbridge to suspendmodules
automake: dont install 3rdparty m4 files from here, fix the packages who need them

Signed-off-by: Stephan Raue <stephan@openelec.tv>
systemd: remove not more needed patch

Signed-off-by: Stephan Raue <stephan@openelec.tv>