loader: Print autoboot countdown immediately, not at 9

For the first second otime and ntime are equal so no message gets
printed. Instead we should print the countdown right from the start,
although we do it at the end of the first iteration so that if a key has
already been pressed then the message is suppressed.

(cherry picked from commit c46f7610d4c5a57fdb2aac5fcbf66aa7124ec703)