package/libilbc: switch to github

The previous repo is not available anymore.

Fixes:
https://autobuild.buildroot.org/results/8c8b073ce163131763fca978b400e596fcf39e62

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 4e5fd24c8b7438672c475d0559200ff72c4b1cc7)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libilbc/Config.in

@@ -4,4 +4,4 @@ config BR2_PACKAGE_LIBILBC
 	  iLBC (internet Low Bitrate Codec) is a FREE speech codec
 	  suitable for robust voice communication over IP.
 
-	  http://www.webrtc.org/license-rights/ilbc-freeware
+	  https://github.com/freeswitch/libilbc

package/libilbc/libilbc.hash

@@ -1,3 +1,3 @@
 # Locally computed
-sha256  f97d8284776c95b31ed5d5441f13b519b8c7966b77a26aa06c29bb77e02cfe16  libilbc-829b08c7902ceb87a261279fabb36b6d523c6e07-br1.tar.gz
+sha256  fe4827a548e96f0549dd8f30eb6a48c6c55fd4535de6c8e9c6e4f38bea6190bf  libilbc-829b08c7902ceb87a261279fabb36b6d523c6e07.tar.gz
 sha256  b7f4cbb4a12cd11a3d1aeda9bd17c99f59b054de4b3ee53045531cd2fa74dd2a  gips_iLBClicense.pdf

package/libilbc/libilbc.mk

@@ -5,8 +5,7 @@
 ################################################################################
 
 LIBILBC_VERSION = 829b08c7902ceb87a261279fabb36b6d523c6e07
-LIBILBC_SITE = https://freeswitch.org/stash/scm/sd/libilbc.git
-LIBILBC_SITE_METHOD = git
+LIBILBC_SITE = $(call github,freeswitch,libilbc,$(LIBILBC_VERSION))
 LIBILBC_LICENSE = Global IP Sound iLBC Public License v2.0
 LIBILBC_LICENSE_FILES = gips_iLBClicense.pdf
 LIBILBC_AUTORECONF = YES