parport: gsc: mark init function static

This is only used locally, so mark it static to avoid a warning:

drivers/parport/parport_gsc.c:395:5: error: no previous prototype for 'parport_gsc_init' [-Werror=missing-prototypes]

Acked-by: Helge Deller <[e-mail]>
Acked-by: Sudip Mukherjee <[e-mail]>
Signed-off-by: Arnd Bergmann <[e-mail]>
Signed-off-by: Helge Deller <[e-mail]>

drivers/parport/parport_gsc.c

···
 	.remove		= __exit_p(parport_remove_chip),
 };
 
-int parport_gsc_init(void)
+static int parport_gsc_init(void)
 {
 	return register_parisc_driver(&parport_driver);
 }