ARM: OMAP: Improve a size determination in two functions

Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/plat-omap/dma.c

@@ -1316,7 +1316,7 @@ static int omap_system_dma_probe(struct platform_device *pdev)
 	enable_1510_mode	= d->dev_caps & ENABLE_1510_MODE;
 
 	dma_chan = devm_kcalloc(&pdev->dev, dma_lch_count,
-				sizeof(struct omap_dma_lch), GFP_KERNEL);
+				sizeof(*dma_chan), GFP_KERNEL);
 	if (!dma_chan)
 		return -ENOMEM;
 

arch/arm/plat-omap/dmtimer.c

@@ -857,7 +857,7 @@ static int omap_dm_timer_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	timer = devm_kzalloc(dev, sizeof(struct omap_dm_timer), GFP_KERNEL);
+	timer = devm_kzalloc(dev, sizeof(*timer), GFP_KERNEL);
 	if (!timer)
 		return  -ENOMEM;