power: pm8921-charger: prevent recharging when batt is overheat

When battery is forced to stop charging by overheat, re-charging
should not be initiated even if re-charging condition is satisfied.

Change-Id: I0070039a186ccf3f12c0e79a8696a7aa3c61e538
diff --git a/drivers/power/pm8921-charger.c b/drivers/power/pm8921-charger.c
index 4acee97..3f31f82 100644
--- a/drivers/power/pm8921-charger.c
+++ b/drivers/power/pm8921-charger.c
@@ -2098,6 +2098,22 @@
 }
 EXPORT_SYMBOL(pm8921_get_batt_state);
 
+int pm8921_get_batt_health(void)
+{
+	int batt_health;
+
+	if (!the_chip) {
+		pr_err("called before init\n");
+		return -EINVAL;
+	}
+
+	batt_health = get_prop_batt_health(the_chip);
+
+	pr_debug("batt health = %d\n", batt_health);
+	return batt_health;
+}
+EXPORT_SYMBOL(pm8921_get_batt_health);
+
 int pm8921_batt_temperature(void)
 {
 	if (!the_chip) {