kunimitsu: Disable HS200 on the eMMC

Disable HS200 on the eMMC because it is not working on some SKUs
which have different eMMC.

BUG=chrome-os-partner:43534
BRANCH=none
TEST=Boot eMMC on Kunimitsu Fab3

Change-Id: I64c838ff57a13fd97c9304074b8abbb9c857a691
Signed-off-by: Wenkai Du <wenkai.du@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/293810
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
diff --git a/src/board/kunimitsu/board.c b/src/board/kunimitsu/board.c
index bcc44f1..ed5f1e6 100644
--- a/src/board/kunimitsu/board.c
+++ b/src/board/kunimitsu/board.c
@@ -73,7 +73,8 @@
 	list_insert_after(&usb_host1->list_node, &usb_host_controllers);
 
 	SdhciHost *emmc, *sd;
-	emmc = new_pci_sdhci_host(PCI_DEV(0, 0x1e, 4), 0,
+	emmc = new_pci_sdhci_host(PCI_DEV(0, 0x1e, 4),
+			SDHCI_PLATFORM_NO_EMMC_HS200,
 			EMMC_SD_CLOCK_MIN, EMMC_CLOCK_MAX);
 	list_insert_after(&emmc->mmc_ctrlr.ctrlr.list_node,
 			&fixed_block_dev_controllers);