wl1251: use wiphy_dev instead of wl->spi->dev

Remove a dependency on the bus-specific struct device by using wiphy_dev
when requesting firmware.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/wl12xx/wl1251_main.c

@@ -75,9 +75,10 @@ static irqreturn_t wl1251_irq(int irq, void *cookie)
 static int wl1251_fetch_firmware(struct wl1251 *wl)
 {
 	const struct firmware *fw;
+	struct device *dev = wiphy_dev(wl->hw->wiphy);
 	int ret;
 
-	ret = request_firmware(&fw, wl->chip.fw_filename, &wl->spi->dev);
+	ret = request_firmware(&fw, wl->chip.fw_filename, dev);
 
 	if (ret < 0) {
 		wl1251_error("could not get firmware: %d", ret);
@@ -113,9 +114,10 @@ static int wl1251_fetch_firmware(struct wl1251 *wl)
 static int wl1251_fetch_nvs(struct wl1251 *wl)
 {
 	const struct firmware *fw;
+	struct device *dev = wiphy_dev(wl->hw->wiphy);
 	int ret;
 
-	ret = request_firmware(&fw, wl->chip.nvs_filename, &wl->spi->dev);
+	ret = request_firmware(&fw, wl->chip.nvs_filename, dev);
 
 	if (ret < 0) {
 		wl1251_error("could not get nvs file: %d", ret);