mfd: lpc_ich: Enable GPIO driver for DH89xxCC

Based on the Intel Datasheet for the DH89xxCC PCH, the GPIO driver
is the same as ICH_v5_GPIO, minus the fact the DH89xxCC also has
blink support. However, blink support isn't supported by the GPIO
driver so we should use ICH_v5_GPIO. Tested and working on a Meraki
MX100-HW.
Signed-off-by: Chris Blake <chrisrblake93@gmail.com>
Co-developed-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/lpc_ich.c

@@ -489,6 +489,7 @@ static struct lpc_ich_info lpc_chipset_info[] = {
 	[LPC_DH89XXCC] = {
 		.name = "DH89xxCC",
 		.iTCO_version = 2,
+		.gpio_version = ICH_V5_GPIO,
 	},
 	[LPC_PPT] = {
 		.name = "Panther Point",