Add binoffset to gitignore

Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

scripts/.gitignore

@@ -6,3 +6,4 @@ kallsyms
 pnmtologo
 bin2c
 unifdef
+binoffset