const_structs.checkpatch: add bin_attribute

Now that the sysfs core can handle "const struct bin_attribute", make
sure that new usages of the struct already enter the tree as const.

Signed-off-by: Thomas Weißschuh <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

scripts/const_structs.checkpatch

···
 acpi_dock_ops
 address_space_operations
 backlight_ops
+bin_attribute
 block_device_operations
 bus_type
 clk_ops