platform: avoid heap allocating string buffer for printing link flags

14 jobs for th/platform-link-broadcast in 35 minutes and 40 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #348017
allowed to fail
checkpatch

00:01:25

manual #348022
allowed to fail manual
t_centos:7.5.1804
passed #348023
t_centos:7.6.1810

00:32:09

passed #348026
t_debian:9

00:18:52

passed #348028
t_debian:sid

00:25:12

manual #348027
allowed to fail manual
t_debian:testing
passed #348018
t_fedora:28

00:25:40

passed #348019
t_fedora:29

00:35:37

passed #348020
t_fedora:30

00:26:48

manual #348021
allowed to fail manual
t_fedora:rawhide
passed #348024
t_ubuntu:16.04

00:25:20

passed #348025
t_ubuntu:18.04

00:19:47

 
  External
passed NetworkManager test verification

passed NetworkManager test verification

05:29:29