w1: ds2408: Fix typo after 49695ac4 (reset on output_write retry with readback)

Fix a typo in commit:
49695ac4 w1: ds2408: reset on output_write retry with readback

Fixes: 49695ac4 ("w1: ds2408: reset on output_write retry with readback")
Reported-by: Phil Elwell <phil@raspberrypi.org>
Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Mariusz Bialonczyk <manio@skyboo.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>