scripts: add const_structs.checkpatch for checkpatch.pl

Kernel has separated the structs that are reported to be const in
checkpatch.pl into a file of its own, const_structs.checkpatch.

This file has been missing after the recent update of checkpatch.pl,
leading to the following message:

  No structs that should be const will be found - file
  '/data/openwrt/scripts/const_structs.checkpatch': No such file
  or directory

This commit adds the relevant file from v5.10-rc4.

Fixes: 086ee09bbc ("scripts: Update checkpatch.pl to 2020-06-11")

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

scripts/const_structs.checkpatch

@@ -0,0 +1,68 @@
+acpi_dock_ops
+address_space_operations
+backlight_ops
+block_device_operations
+clk_ops
+comedi_lrange
+component_ops
+dentry_operations
+dev_pm_ops
+dma_map_ops
+driver_info
+drm_connector_funcs
+drm_encoder_funcs
+drm_encoder_helper_funcs
+ethtool_ops
+extent_io_ops
+file_lock_operations
+file_operations
+hv_ops
+ide_dma_ops
+ide_port_ops
+inode_operations
+intel_dvo_dev_ops
+irq_domain_ops
+item_operations
+iwl_cfg
+iwl_ops
+kgdb_arch
+kgdb_io
+kset_uevent_ops
+lock_manager_operations
+machine_desc
+microcode_ops
+mlxsw_reg_info
+mtrr_ops
+neigh_ops
+net_device_ops
+nlmsvc_binding
+nvkm_device_chip
+of_device_id
+pci_raw_ops
+phy_ops
+pinctrl_ops
+pinmux_ops
+pipe_buf_operations
+platform_hibernation_ops
+platform_suspend_ops
+proto_ops
+regmap_access_table
+regulator_ops
+rpc_pipe_ops
+rtc_class_ops
+sd_desc
+seq_operations
+sirfsoc_padmux
+snd_ac97_build_ops
+snd_soc_component_driver
+soc_pcmcia_socket_ops
+stacktrace_ops
+sysfs_ops
+tty_operations
+uart_ops
+usb_mon_operations
+v4l2_ctrl_ops
+v4l2_ioctl_ops
+vm_operations_struct
+wacom_features
+wd_ops