package/opkg: add hash

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/opkg/opkg.hash

@@ -0,0 +1,2 @@
+# Locally computed
+sha256 2ec7157ccf866e49ca139e3632ba1ca9d61dc24382606b55062e423161a530b0  opkg-v0.3.1.tar.gz