i2c: pca-isa: Utilize the module_isa_driver macro

This driver does not do anything special in module init/exit. This patch
eliminates the module init/exit boilerplate code by utilizing the
module_isa_driver macro.
Signed-off-by: NWilliam Breathitt Gray <vilhelm.gray@gmail.com>
[wsa: remove two empty lines while here]
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-pca-isa.c

@@ -193,23 +193,12 @@ static struct isa_driver pca_isa_driver = {
 	}
 };
 
-static int __init pca_isa_init(void)
-{
-	return isa_register_driver(&pca_isa_driver, 1);
-}
-
-static void __exit pca_isa_exit(void)
-{
-	isa_unregister_driver(&pca_isa_driver);
-}
-
 MODULE_AUTHOR("Ian Campbell <icampbell@arcom.com>");
 MODULE_DESCRIPTION("ISA base PCA9564/PCA9665 driver");
 MODULE_LICENSE("GPL");
 
 module_param(base, ulong, 0);
 MODULE_PARM_DESC(base, "I/O base address");
-
 module_param(irq, int, 0);
 MODULE_PARM_DESC(irq, "IRQ");
 module_param(clock, int, 0);
@@ -220,6 +209,4 @@ MODULE_PARM_DESC(clock, "Clock rate in hertz.\n\t\t"
 		"\t\t\t\tFast: 100100 - 400099\n"
 		"\t\t\t\tFast+: 400100 - 10000099\n"
 		"\t\t\t\tTurbo: Up to 1265800");
-
-module_init(pca_isa_init);
-module_exit(pca_isa_exit);
+module_isa_driver(pca_isa_driver, 1);