mfd: lpc_ich: Fix ACPI enable bitmask

The original bitmask of 0x10 was incorrect and would result in a write
to a reserved read-only bit instead of enabling the ACPI I/O
region.  Update it to the proper value of 0x80.
Signed-off-by: NPeter Tyser <ptyser@xes-inc.com>
Tested-by: NRajat Jain <rajatjain@juniper.net>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

drivers/mfd/lpc_ich.c

@@ -759,7 +759,7 @@ static void lpc_ich_enable_acpi_space(struct pci_dev *dev)
 	u8 reg_save;
 
 	pci_read_config_byte(dev, priv->acpi.ctrl, &reg_save);
-	pci_write_config_byte(dev, priv->acpi.ctrl, reg_save | 0x10);
+	pci_write_config_byte(dev, priv->acpi.ctrl, reg_save | 0x80);
 	priv->acpi.save = reg_save;
 }