evemu: use sysroot provided input.h file (instead of host system version)

Add patch for src/make-event-names.py to use sysroot provided input.h
instead of hard coded '/usr/include/linux/input.h' (host system version)
one.

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>