power: pmic: tps65941: Add support for probing the child devices

TPS65941 can have child devices under it (like the ESM support), so
probe these once the master pmic node completes probe.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
diff --git a/drivers/power/pmic/tps65941.c b/drivers/power/pmic/tps65941.c
index e8f3c95..7b3416a 100644
--- a/drivers/power/pmic/tps65941.c
+++ b/drivers/power/pmic/tps65941.c
@@ -59,8 +59,8 @@
 	if (!children)
 		printf("%s: %s - no child found\n", __func__, dev->name);
 
-	/* Always return success for this device */
-	return 0;
+	/* Probe all the child devices */
+	return dm_scan_fdt_dev(dev);
 }
 
 static struct dm_pmic_ops tps65941_ops = {