mfd: pm8921: Add support for pm8018

In order to support the Qualcomm MDM9615 PMIC, add support for the
pm8018 in pm8921 MFD driver.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/pm8921-core.c b/drivers/mfd/pm8921-core.c
index 1b7ec08..0e3a2ea 100644
--- a/drivers/mfd/pm8921-core.c
+++ b/drivers/mfd/pm8921-core.c
@@ -309,6 +309,7 @@
 };
 
 static const struct of_device_id pm8921_id_table[] = {
+	{ .compatible = "qcom,pm8018", },
 	{ .compatible = "qcom,pm8058", },
 	{ .compatible = "qcom,pm8921", },
 	{ }