power: regulator: tps65090: get_enable should return integer

get_enable should be able to return error values. Hence change
the return type to integer.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

drivers/power/regulator/tps65090_regulator.c

@@ -23,7 +23,7 @@ static int tps65090_fet_probe(struct udevice *dev)
 	return 0;
 }
 
-static bool tps65090_fet_get_enable(struct udevice *dev)
+static int tps65090_fet_get_enable(struct udevice *dev)
 {
 	struct udevice *pmic = dev_get_parent(dev);
 	int ret, fet_id;