evemu: enable python3 bindings

Add evemu/python3 related patches:
- fix python/evemu/base.py for python3 (add patch from [1])
- fix python3 binding runtime failure

[1] http://ftp.de.debian.org/debian/pool/main/e/evemu/evemu_1.2.0-2.debian.tar.xz



Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>