gst1-imx: add hash for license file

Signed-off-by: Adam Duskett <aduskett@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/gstreamer1/gst1-imx/gst1-imx.hash

@@ -1,2 +1,3 @@
 # locally computed hash
 sha256 3fcf1046ab8c6c7cd94218f4d2bc31ad7b5efa8a6b8f9fd5d93dc182f98ce026  gst1-imx-0.13.0.tar.gz
+sha256 94b03f1a60a7fd5007149530626a895a6ef5a8b9342abfd56860c5f3956f5d23  LICENSE