mfd: ti_am335x_tscadc: Use variable name for sizeof() operator

Fix the code formatting to use the kernel preferred style
of using the actual variables to determine the size using
the sizeof() operator.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/ti_am335x_tscadc.c

@@ -182,8 +182,7 @@ static	int ti_tscadc_probe(struct platform_device *pdev)
 	}
 
 	/* Allocate memory for device */
-	tscadc = devm_kzalloc(&pdev->dev,
-			sizeof(struct ti_tscadc_dev), GFP_KERNEL);
+	tscadc = devm_kzalloc(&pdev->dev, sizeof(*tscadc), GFP_KERNEL);
 	if (!tscadc) {
 		dev_err(&pdev->dev, "failed to allocate memory.\n");
 		return -ENOMEM;