max1720x_battery: release model_lock before max1720x_fg_irq_thread_fn The model_lock was held in max1720x_fg_irq_thread_fn ->max1720x_model_reload. Need to release model_lock before holding it again. Bug: 202520235 Signed-off-by: Jenny Ho <[email protected]> Change-Id: Ie7701dd55cadb60d717491b2b9654d926b0cf6dc