power: regulator: lp87565: 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/lp87565_regulator.c

@@ -166,7 +166,7 @@ static int buck_set_value(struct udevice *dev, int uV)
 	return lp87565_buck_val(dev, PMIC_OP_SET, &uV);
 }
 
-static bool buck_get_enable(struct udevice *dev)
+static int buck_get_enable(struct udevice *dev)
 {
 	bool enable = false;
 	int ret;