power: max8925: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 201510 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/max8925_power.c

@@ -124,6 +124,7 @@ static irqreturn_t max8925_charger_handler(int irq, void *data)
 	case MAX8925_IRQ_VCHG_THM_OK_F:
 		/* Battery is not ready yet */
 		dev_dbg(chip->dev, "Battery temperature is out of range\n");
+		/* Fall through */
 	case MAX8925_IRQ_VCHG_DC_OVP:
 		dev_dbg(chip->dev, "Error detection\n");
 		__set_charger(info, 0);