libpcap: add hash for license file

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libpcap/libpcap.hash

@@ -1,2 +1,5 @@
 # Locally calculated after checking pgp signature
 sha256	673dbc69fdc3f5a86fb5759ab19899039a8e5e6c631749e48dcd9c6f0c83541e	libpcap-1.8.1.tar.gz
+
+# Hash for license file:
+sha256	8a54594d257e14a5260ac770f1633516cb51e3fc28c40136ce2697014eda7afd	LICENSE