hwspinlock: u8500_hsem: Use devm_kzalloc() to allocate memory

	/* clear all interrupts */

	writel(0xFFFF, io_base + HSEM_ICRALL);

	bank = kzalloc(struct_size(bank, lock, num_locks), GFP_KERNEL);

	bank = devm_kzalloc(&pdev->dev, struct_size(bank, lock, num_locks),

			    GFP_KERNEL);

	if (!bank)

		return -ENOMEM;

	ret = hwspin_lock_register(bank, &pdev->dev, &u8500_hwspinlock_ops,

						pdata->base_id, num_locks);

	if (ret)

		goto reg_fail;

	return 0;

reg_fail:

	if (ret) {

		pm_runtime_disable(&pdev->dev);

	kfree(bank);

		return ret;

	}

	return 0;

}

static int u8500_hsem_remove(struct platform_device *pdev)

{

	struct hwspinlock_device *bank = platform_get_drvdata(pdev);

	}

	pm_runtime_disable(&pdev->dev);

	kfree(bank);

	return 0;

}