usb: usbip: eliminate anonymous module_init & module_exit

Eliminate anonymous module_init() and module_exit(), which can lead to
confusion or ambiguity when reading System.map, crashes/oops/bugs,
or an initcall_debug log.

Give each of these init and exit functions unique driver-specific
names to eliminate the anonymous names.

Example 1: (System.map)
ffffffff832fc78c t init
ffffffff832fc79e t init
ffffffff832fc8f8 t init

Example 2: (initcall_debug log)
calling init+0x0/0x12 @ 1
initcall init+0x0/0x12 returned 0 after 15 usecs
calling init+0x0/0x60 @ 1
initcall init+0x0/0x60 returned 0 after 2 usecs
calling init+0x0/0x9a @ 1
initcall init+0x0/0x9a returned 0 after 74 usecs

Fixes: 80fd9cd52de6 ("usbip: vudc: Add VUDC main file")
Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Krzysztof Opasiak <[e-mail]>
Cc: Igor Kotrasinski <[e-mail]>
Cc: Valentina Manea <[e-mail]>
Cc: Shuah Khan <[e-mail]>
Cc: Shuah Khan <[e-mail]>
Cc: [e-mail]
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/usbip/vudc_main.c

···
 
 static LIST_HEAD(vudc_devices);
 
-static int __init init(void)
+static int __init vudc_init(void)
 {
 	int retval = -ENOMEM;
 	int i;
···
 out:
 	return retval;
 }
-module_init(init);
+module_init(vudc_init);
 
-static void __exit cleanup(void)
+static void __exit vudc_cleanup(void)
 {
 	struct vudc_device *udc_dev = NULL, *udc_dev2 = NULL;
 
···
 	}
 	platform_driver_unregister(&vudc_driver);
 }
-module_exit(cleanup);
+module_exit(vudc_cleanup);
 
 MODULE_DESCRIPTION("USB over IP Device Controller");
 MODULE_AUTHOR("Krzysztof Opasiak, Karol Kosik, Igor Kotrasinski");