net: tcp: Start retry timer when queueing data
net: tcp: Start retry timer when queueing data

When sending TCP data, check if the retry timer needs
to be started.

Change-Id: Iea90716e918dec0b22e60bf32467b11c0d1a296f
Signed-off-by: june li <90d28038b8d86ff741b4a33d8d3f52a519d03c88@foxmail.com>

fbsder/zephyr,fbsder/zephyr,fbsder/zephyr,fbsder/zephyr,fbsder/zephyr