wl1251: add NVS in EEPROM support

wl1251 supports also that NVS is stored in a separate EEPROM, add support
for that.

kvalo: use platform data instead Kconfig and use kernel style

Signed-off-by: David-John Willis <John.Willis@Distant-earth.com>
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/wl12xx/wl1251_boot.c b/drivers/net/wireless/wl12xx/wl1251_boot.c
index 5094f24..2e733e7 100644
--- a/drivers/net/wireless/wl12xx/wl1251_boot.c
+++ b/drivers/net/wireless/wl12xx/wl1251_boot.c
@@ -494,13 +494,19 @@
 		goto out;
 
 	/* 2. start processing NVS file */
-	ret = wl1251_boot_upload_nvs(wl);
-	if (ret < 0)
-		goto out;
+	if (wl->use_eeprom) {
+		wl1251_reg_write32(wl, ACX_REG_EE_START, START_EEPROM_MGR);
+		msleep(4000);
+		wl1251_reg_write32(wl, ACX_EEPROMLESS_IND_REG, USE_EEPROM);
+	} else {
+		ret = wl1251_boot_upload_nvs(wl);
+		if (ret < 0)
+			goto out;
 
-	/* write firmware's last address (ie. it's length) to
-	 * ACX_EEPROMLESS_IND_REG */
-	wl1251_reg_write32(wl, ACX_EEPROMLESS_IND_REG, wl->fw_len);
+		/* write firmware's last address (ie. it's length) to
+		 * ACX_EEPROMLESS_IND_REG */
+		wl1251_reg_write32(wl, ACX_EEPROMLESS_IND_REG, wl->fw_len);
+	}
 
 	/* 6. read the EEPROM parameters */
 	tmp = wl1251_reg_read32(wl, SCR_PAD2);