mfd: Use module_pci_driver

This patch converts the drivers in drivers/mfd/* to use module_pci_driver()
macro which makes the code smaller and a bit simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Andres Salomon <dilinger@queued.net>
Cc: Ira W. Snyder <iws@ovro.caltech.edu>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Denis Turischev <denis@compulab.co.il>
Cc: Harald Welte <HaraldWelte@viatech.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/lpc_sch.c b/drivers/mfd/lpc_sch.c
index abc4213..27026eb 100644
--- a/drivers/mfd/lpc_sch.c
+++ b/drivers/mfd/lpc_sch.c
@@ -167,18 +167,7 @@
 	.remove		= __devexit_p(lpc_sch_remove),
 };
 
-static int __init lpc_sch_init(void)
-{
-	return pci_register_driver(&lpc_sch_driver);
-}
-
-static void __exit lpc_sch_exit(void)
-{
-	pci_unregister_driver(&lpc_sch_driver);
-}
-
-module_init(lpc_sch_init);
-module_exit(lpc_sch_exit);
+module_pci_driver(lpc_sch_driver);
 
 MODULE_AUTHOR("Denis Turischev <denis@compulab.co.il>");
 MODULE_DESCRIPTION("LPC interface for Intel Poulsbo SCH");