modules: update OpenWrt routing

This adds an important bugfix for BATMAN V users
("batman-adv: Fix own OGM check in aggregated OGMs").

b77498bd56 Merge pull request #603 from ecsv/batadv-for-19.07
6dea537c07 batman-adv: Merge bugfixes from 2020.3
0e5c75f536 Merge pull request #601 from bluewavenet/openwrt-19.07
ad8f02a4aa opennds: Backport v5.2.0
017d89d569 batctl: Enable build of mcast_flags subcommand

Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>

modules

@@ -10,7 +10,7 @@ PACKAGES_PACKAGES_COMMIT=59d39c09d84fb08675cc58d4ec32837e9163b017
 
 PACKAGES_ROUTING_REPO=https://github.com/openwrt-routing/packages.git
 PACKAGES_ROUTING_BRANCH=openwrt-19.07
-PACKAGES_ROUTING_COMMIT=ad79a0f065a2096758b666dfe5e6b5926be2d166
+PACKAGES_ROUTING_COMMIT=b77498bd56d5e45ab4577a1f4ad6ffc55b4a86b7
 
 PACKAGES_GLUON_REPO=https://github.com/freifunk-gluon/packages.git
 PACKAGES_GLUON_COMMIT=12e41d0ff07ec54bbd67a31ab50d12ca04f2238c