autoconf-archive: add hash

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/autoconf-archive/autoconf-archive.hash

@@ -0,0 +1,2 @@
+# Computed locally
+sha256 dfd460d23a9690322dee29a355ea285b5774f37383d3741cf77a4ad6a11a7e81  autoconf-archive-2015.02.04.tar.xz