mfd: pm8921: Add DT match table

Allow this driver to probe based on devicetree.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/pm8921-core.c

@@ -392,6 +392,13 @@ static const struct regmap_config ssbi_regmap_config = {
 	.reg_write = ssbi_reg_write
 };
 
+static const struct of_device_id pm8921_id_table[] = {
+	{ .compatible = "qcom,pm8058", },
+	{ .compatible = "qcom,pm8921", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, pm8921_id_table);
+
 static int pm8921_probe(struct platform_device *pdev)
 {
 	struct pm8921 *pmic;
@@ -501,6 +508,7 @@ static struct platform_driver pm8921_driver = {
 	.driver		= {
 		.name	= "pm8921-core",
 		.owner	= THIS_MODULE,
+		.of_match_table = pm8921_id_table,
 	},
 };