power: supply: ab8500_charger: fix spelling mistake: "faile" -> "failed"

trivial fix to spelling mistake in dev_error message.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>

drivers/power/supply/ab8500_charger.c

@@ -3066,7 +3066,7 @@ static int ab8500_charger_init_hw_registers(struct ab8500_charger *di)
 		AB8500_SYS_CTRL2_BLOCK,
 		AB8500_MAIN_WDOG_CTRL_REG, MAIN_WDOG_ENA);
 	if (ret) {
-		dev_err(di->dev, "faile to enable main watchdog\n");
+		dev_err(di->dev, "failed to enable main watchdog\n");
 		goto out;
 	}