liblo: add hash file

Fixes:
http://autobuild.buildroot.net/results/579/579df46b1fdb46fa5ec0fd28324cf28b7c06b5bb/
http://autobuild.buildroot.net/results/f20/f2023b000b3ef8d459bba04a29f58be88246cb46/
http://autobuild.buildroot.net/results/e2a/e2acf1f0355df709836e92e4382019b6e8f77978/
http://autobuild.buildroot.net/results/5b9/5b9c2a678a0950def2aeaf7e5809386c5923e974/



And many more.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>