I changed the download site of linux package to https://portland.source.codeaurora.org/external/qoriq/qoriq-components/linux.git
It helped me.
This is network problem.
How to set HTTP proxy in Ubuntu
If your Linux host machine is in a subnet that needs HTTP(s) proxy to access external Internet, please set environment variable
http_proxy and https_proxy as below:
1. Set proxy in ~/.bashrc (for current user) or in /etc/profile.d/proxy.sh (for global users), then run "source ~/.bashrc" or
"source /etc/profile.d/proxy.sh" to validate the settings.
export http_proxy="http://<account>:<password>@<domain>:<port>"
export https_proxy="https://<account>:<password>@<domain>:<port>"
2. Set proxy in /etc/apt/apt.conf
Acquire::http::Proxy "http://<account>:<password>@<domain>:<port>";
Acquire::https::Proxy "https://<account>:<password>@<domain>:<port>";