mmc: host: Use sentinels for devicetree match tables

Use sentinels as the path terminator for device match table
in drivers msm_sdcc.c and sdhci-msm.c. Without this, of_dev_lookup()
may run off the end of the array looking for bogus data.

CRs-Fixed: 582113
Change-Id: I069d3e058cea9f1bf74d48e7f7e83465ca981017
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index e391a06..4d3a560 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -3113,6 +3113,7 @@
 #endif
 static const struct of_device_id sdhci_msm_dt_match[] = {
 	{.compatible = "qcom,sdhci-msm"},
+	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, sdhci_msm_dt_match);