add transaction sizes to pu_display_transaction

Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
pu_confirm: properly slurp trailing input

Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
fix pu_log_command

* fix =+ typo
* add trailing newline

Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>