i2c: imx+mxs: Use the preferred form for passing a size of a struct

According to Documentation/CodingStyle - Chapter 14:

"The preferred form for passing a size of a struct is the following:

p = kmalloc(sizeof(*p), ...);

The alternative form where struct name is spelled out hurts readability and
introduces an opportunity for a bug when the pointer variable type is changed
but the corresponding sizeof that is passed to a memory allocator is not."

So do it as recommeded.

Signed-off-by: Fabio Estevam <[e-mail]>
Signed-off-by: Wolfram Sang <[e-mail]>

drivers/i2c/busses/i2c-imx.c

···
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
-	i2c_imx = devm_kzalloc(&pdev->dev, sizeof(struct imx_i2c_struct),
-				GFP_KERNEL);
+	i2c_imx = devm_kzalloc(&pdev->dev, sizeof(*i2c_imx), GFP_KERNEL);
 	if (!i2c_imx)
 		return -ENOMEM;
 

drivers/i2c/busses/i2c-mxs.c

···
 	struct resource *res;
 	int err, irq;
 
-	i2c = devm_kzalloc(dev, sizeof(struct mxs_i2c_dev), GFP_KERNEL);
+	i2c = devm_kzalloc(dev, sizeof(*i2c), GFP_KERNEL);
 	if (!i2c)
 		return -ENOMEM;