w1: Fix documentation warning.

This patch fixes - warning: Function parameter or member 'of_match_table'
not described in 'w1_family'

Signed-off-by: Dhanuka Warusadura <csx@disroot.org>
Link: https://lore.kernel.org/r/20191028110744.6523-1-csx@disroot.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>