media: platform: davinci: Use DEFINE_SPINLOCK() for spinlock

spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Reviewed-by: Lad Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/platform/davinci/vpif.c

@@ -41,7 +41,7 @@ MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
 #define VPIF_CH2_MAX_MODES	15
 #define VPIF_CH3_MAX_MODES	2
 
-spinlock_t vpif_lock;
+DEFINE_SPINLOCK(vpif_lock);
 EXPORT_SYMBOL_GPL(vpif_lock);
 
 void __iomem *vpif_base;
@@ -437,7 +437,6 @@ static int vpif_probe(struct platform_device *pdev)
 	pm_runtime_enable(&pdev->dev);
 	pm_runtime_get(&pdev->dev);
 
-	spin_lock_init(&vpif_lock);
 	dev_info(&pdev->dev, "vpif probe success\n");
 
 	/*