wl12xx: fix compilation error when CONFIG_PM is not set

There was a compilation error when PM is not enabled:

  CC [M]  drivers/net/wireless/wl12xx/main.o
drivers/net/wireless/wl12xx/main.c:3653: error: unknown field 'suspend' specified in initializer
drivers/net/wireless/wl12xx/main.c:3653: warning: initialization from incompatible pointer type
drivers/net/wireless/wl12xx/main.c:3654: error: unknown field 'resume' specified in initializer
drivers/net/wireless/wl12xx/main.c:3654: warning: initialization from incompatible pointer type

Fix this by adding #ifdef's in the appropriate places.

Cc: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/wl12xx/sdio.c b/drivers/net/wireless/wl12xx/sdio.c
index 92d29a8..536e506 100644
--- a/drivers/net/wireless/wl12xx/sdio.c
+++ b/drivers/net/wireless/wl12xx/sdio.c
@@ -330,6 +330,7 @@
 	wl1271_free_hw(wl);
 }
 
+#ifdef CONFIG_PM
 static int wl1271_suspend(struct device *dev)
 {
 	/* Tell MMC/SDIO core it's OK to power down the card
@@ -385,15 +386,18 @@
 	.suspend	= wl1271_suspend,
 	.resume		= wl1271_resume,
 };
+#endif
 
 static struct sdio_driver wl1271_sdio_driver = {
 	.name		= "wl1271_sdio",
 	.id_table	= wl1271_devices,
 	.probe		= wl1271_probe,
 	.remove		= __devexit_p(wl1271_remove),
+#ifdef CONFIG_PM
 	.drv = {
 		.pm = &wl1271_sdio_pm_ops,
 	},
+#endif
 };
 
 static int __init wl1271_init(void)