sound-theme-freedesktop: add hash file

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/sound-theme-freedesktop/sound-theme-freedesktop.hash

@@ -0,0 +1,2 @@
+# Locally calculated
+sha256	e6595afb02b76099ef6df42c2ac7c4f9680c21c3f26b2a7ca0943d1fdbbd9aef	sound-theme-freedesktop-0.7.tar.bz2