version_autogenerated.h: use printf rather than echo -n

Some systems are dumb and do not implement the -n flag to echo (like OS X).
Convert the Makefile to use printf as this should work everywhere.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Wolfgang Denk <wd@denx.de>
1 file changed