leds: uleds: Use module_misc_device macro to simplify the code

Use the module_misc_device macro to simplify the code, which is the
same as declaring with module_init() and module_exit().

Signed-off-by: Li Zetao <[e-mail]>
Reviewed-by: Andrew Lunn <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/leds/uleds.c

···
 	.name		= ULEDS_NAME,
 };
 
-static int __init uleds_init(void)
-{
-	return misc_register(&uleds_misc);
-}
-module_init(uleds_init);
-
-static void __exit uleds_exit(void)
-{
-	misc_deregister(&uleds_misc);
-}
-module_exit(uleds_exit);
+module_misc_device(uleds_misc);
 
 MODULE_AUTHOR("David Lechner <[e-mail]>");
 MODULE_DESCRIPTION("Userspace driver for the LED subsystem");