tests/timer: tweak path to config.h

When building out-of-srcdir, "../../config.h" fails to reach config.h
because the compiler is invoked in $builddir/tests/, not
$builddir/tests/timer/.  Use "../config.h" instead; this also works
for in-srcdir builds.

Signed-off-by: Alex Badea <vamposdecampos@gmail.com>
1 file changed