package/gst-omx: add hash file

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gstreamer1/gst-omx/gst-omx.hash

@@ -0,0 +1,2 @@
+# locally computed
+sha256  0b4874961e6488ad9e5808114bd486ea981c540907262caab1419355fd82d745  gst-omx-1.2.0.tar.xz