driver core: Constify attribute arguments of binary attributes

As preparation for the constification of struct bin_attribute,
constify the arguments of the read and write callbacks.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Krzysztof Wilczyński <kw@linux.com>
Link: https://lore.kernel.org/r/20241103-sysfs-const-bin_attr-v2-10-71110628844c@weissschuh.net


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