libass: add hash file

Signed-off-by: Jerzy Grzegorek <jerzy.grzegorek@trzebnica.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libass/libass.hash

@@ -0,0 +1,2 @@
+# From https://code.google.com/p/libass/downloads/detail?name=libass-0.10.2.tar.xz&can=2&q=
+sha1 72a153364e838d3b561bae3653f1515169d479c4 libass-0.10.2.tar.xz