avcodec: add aac-profile strings for he-aac and he-aac v2, libfdk-aac supports them

modules/codec/avcodec/encoder.c

@@ -393,6 +393,13 @@ int OpenEncoder( vlc_object_t *p_this )
 #endif
         else if( !strncmp( psz_val, "ltp", 3 ) )
             p_sys->i_aac_profile = FF_PROFILE_AAC_LTP;
+#if LIBAVCODEC_VERSION_CHECK( 54, 19, 0, 35, 100 )
+/* These require ffmpeg with libfdk-aac */
+        else if( !strncmp( psz_val, "hev2", 4 ) )
+            p_sys->i_aac_profile = FF_PROFILE_AAC_HE_V2;
+        else if( !strncmp( psz_val, "hev1", 4 ) )
+            p_sys->i_aac_profile = FF_PROFILE_AAC_HE;
+#endif
         else
         {
             msg_Warn( p_enc, "unknown AAC profile requested, setting it to low" );