libgpiod: add hash for license file

Signed-off-by: Rahul Bedarkar <rahulbedarkar89@gmail.com>
Reviewed-by: Adrian Perez de Castro <aperez@igalia.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libgpiod/libgpiod.hash

@@ -1,2 +1,4 @@
 # From https://www.kernel.org/pub/software/libs/libgpiod/sha256sums.asc
 sha256 50c7862428ca90b58672e2475aea66d33a6fc86c6bab1928c0660f3aedf44a37  libgpiod-0.3.2.tar.xz
+# Hash for license file
+sha256 ce64d5f7b49ea6d80fdb6d4cdee6839d1a94274f7493dc797c3b55b65ec8e9ed  COPYING