w1: ds2805: Use module_w1_family to simplify the code

module_w1_family() makes the code simpler by eliminating
boilerplate code.

Signed-off-by: Chen Huang <chenhuang5@huawei.com>
Link: https://lore.kernel.org/r/20210408130954.1158963-1-chenhuang5@huawei.com


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