libev: add hash file

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

package/libev/libev.hash

@@ -0,0 +1,2 @@
+# Locally calculated
+sha256	88fc5f89ca96ceca14c16c10e7be3e921dae65e84932d680c2fd6a40173edccb	libev-4.19.tar.gz