[openwrt/openwrt] umdns: update seccomp filter rules

[LEDE Commits]

dangole pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/64cbfd1f547cc8c3a1fd427644fd1c4fb476b81c

commit 64cbfd1f547cc8c3a1fd427644fd1c4fb476b81c
Author: Daniel Golle <daniel at makrotopia.org>
AuthorDate: Thu Nov 26 20:49:16 2020 +0000

    umdns: update seccomp filter rules
    
    Add 'writev' syscall to list of allowed syscalls.
    
    Signed-off-by: Daniel Golle <daniel at makrotopia.org>
---
 package/network/services/umdns/Makefile         | 2 +-
 package/network/services/umdns/files/umdns.json | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/package/network/services/umdns/Makefile b/package/network/services/umdns/Makefile
index d8cd9ae749..dc032af31b 100644
--- a/package/network/services/umdns/Makefile
+++ b/package/network/services/umdns/Makefile
@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=umdns
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/mdnsd.git
 PKG_SOURCE_PROTO:=git
diff --git a/package/network/services/umdns/files/umdns.json b/package/network/services/umdns/files/umdns.json
index db62f5f36d..14affd776c 100644
--- a/package/network/services/umdns/files/umdns.json
+++ b/package/network/services/umdns/files/umdns.json
@@ -5,6 +5,7 @@
 			"names": [
 				"read",
 				"write",
+				"writev",
 				"open",
 				"close",
 				"time",