r8169: change mdelay to msleep in rtl_fw_write_firmware

We're not in atomic context here, therefore switch to msleep.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/realtek/r8169_firmware.c

@@ -198,7 +198,7 @@ void rtl_fw_write_firmware(struct rtl8169_private *tp, struct rtl_fw *rtl_fw)
 			index += regno;
 			break;
 		case PHY_DELAY_MS:
-			mdelay(data);
+			msleep(data);
 			break;
 		}
 	}