mfd: ssbi: Mark match table const

This is a read-only data structure.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/ssbi.c b/drivers/mfd/ssbi.c
index dd1d28f..b78942e 100644
--- a/drivers/mfd/ssbi.c
+++ b/drivers/mfd/ssbi.c
@@ -317,7 +317,7 @@
 	return of_platform_populate(np, NULL, NULL, &pdev->dev);
 }
 
-static struct of_device_id ssbi_match_table[] = {
+static const struct of_device_id ssbi_match_table[] = {
 	{ .compatible = "qcom,ssbi" },
 	{}
 };