checkpatch: externalize the structs that should be const

Make it easier to add new structs that should be const.

Link: http://lkml.kernel.org/r/e5a8da43e7c11525bafbda1ca69a8323614dd942.1472664220.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Kees Cook <keescook@chromium.org>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

scripts/const_structs.checkpatch

@@ -0,0 +1,39 @@
+acpi_dock_ops
+address_space_operations
+backlight_ops
+block_device_operations
+dentry_operations
+dev_pm_ops
+dma_map_ops
+extent_io_ops
+file_lock_operations
+file_operations
+hv_ops
+ide_dma_ops
+intel_dvo_dev_ops
+item_operations
+iwl_ops
+kgdb_arch
+kgdb_io
+kset_uevent_ops
+lock_manager_operations
+microcode_ops
+mtrr_ops
+neigh_ops
+nlmsvc_binding
+of_device_id
+pci_raw_ops
+pipe_buf_operations
+platform_hibernation_ops
+platform_suspend_ops
+proto_ops
+rpc_pipe_ops
+seq_operations
+snd_ac97_build_ops
+soc_pcmcia_socket_ops
+stacktrace_ops
+sysfs_ops
+tty_operations
+uart_ops
+usb_mon_operations
+wd_ops