mmc: atmel_sdhci: Enable the quirk SDHCI_QUIRK_WAIT_SEND_CMD

To fix the timeout of sending the write command, enable the quirk
SDHCI_QUIRK_WAIT_SEND_CMD.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/mmc/atmel_sdhci.c b/drivers/mmc/atmel_sdhci.c
index 8522557..86e36a9 100644
--- a/drivers/mmc/atmel_sdhci.c
+++ b/drivers/mmc/atmel_sdhci.c
@@ -28,7 +28,7 @@
 
 	host->name = "atmel_sdhci";
 	host->ioaddr = regbase;
-	host->quirks = 0;
+	host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
 	max_clk = at91_get_periph_generated_clk(id);
 	if (!max_clk) {
 		printf("%s: Failed to get the proper clock\n", __func__);
@@ -74,7 +74,7 @@
 	host->name = dev->name;
 	host->ioaddr = (void *)dev_get_addr(dev);
 
-	host->quirks = 0;
+	host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
 	host->bus_width	= fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
 					 "bus-width", 4);