mmc: am654_sdhci: Get Xin clock by name

Get clk_xin by name instead of by index to avoid having to put clocks in
the same order in all devices.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/drivers/mmc/am654_sdhci.c b/drivers/mmc/am654_sdhci.c
index 7cd5516..a4359fc 100644
--- a/drivers/mmc/am654_sdhci.c
+++ b/drivers/mmc/am654_sdhci.c
@@ -223,7 +223,7 @@
 	unsigned long clock;
 	int ret;
 
-	ret = clk_get_by_index(dev, 0, &clk);
+	ret = clk_get_by_name(dev, "clk_xin", &clk);
 	if (ret) {
 		dev_err(dev, "failed to get clock\n");
 		return ret;