ath9k: Store subsystem id in struct hw_version

This subsystem id will be used later to turn on the btcoex
support.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/ahb.c b/drivers/net/wireless/ath/ath9k/ahb.c
index 7dc6301..2ad7d02 100644
--- a/drivers/net/wireless/ath/ath9k/ahb.c
+++ b/drivers/net/wireless/ath/ath9k/ahb.c
@@ -119,7 +119,7 @@
 	sc->bus_ops = &ath_ahb_bus_ops;
 	sc->irq = irq;
 
-	ret = ath_init_device(AR5416_AR9100_DEVID, sc);
+	ret = ath_init_device(AR5416_AR9100_DEVID, sc, 0x0);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to initialize device\n");
 		goto err_free_hw;