qlcnic: use const 'struct bin_attribute' callbacks

The sysfs core now provides callback variants that explicitly take a
const pointer. Use them so the non-const variants can be removed.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20241219-sysfs-const-bin_attr-net-v2-1-93bdaece3c90@weissschuh.net


Signed-off-by: Jakub Kicinski <kuba@kernel.org>