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 <[e-mail]>
Reviewed-by: Bjorn Andersson <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/pm8921-core.c

···
 };
 
 static const struct of_device_id pm8921_id_table[] = {
+	{ .compatible = "qcom,pm8018", },
 	{ .compatible = "qcom,pm8058", },
 	{ .compatible = "qcom,pm8921", },
 	{ }