From: Andreas Schneider <asn@cryptomilk.org>

fdk-aac-free-devel is GPL compatible

See https://bugzilla.redhat.com/show_bug.cgi?id=1501522#c112

Index: ffmpeg-5.0/configure
===================================================================
--- ffmpeg-5.0.orig/configure	2022-02-09 20:07:49.490888877 +0100
+++ ffmpeg-5.0/configure	2022-02-09 20:08:30.102854308 +0100
@@ -1783,7 +1783,6 @@ EXTERNAL_LIBRARY_GPL_LIST="
 
 EXTERNAL_LIBRARY_NONFREE_LIST="
     decklink
-    libfdk_aac
     libtls
 "
 
@@ -1822,6 +1821,7 @@ EXTERNAL_LIBRARY_LIST="
     libdav1d
     libdc1394
     libdrm
+    libfdk_aac
     libflite
     libfontconfig
     libfreetype