clk: sunxi: Use resource_size

Use the function resource_size instaed of explicit computation.

Problem found using Coccinelle.

Signed-off-by: Vaishali Thakkar <[e-mail]>
Acked-by: Chen-Yu Tsai <[e-mail]>
Signed-off-by: Maxime Ripard <[e-mail]>

drivers/clk/sunxi/clk-sun9i-mmc.c

···
 
 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	/* one clock/reset pair per word */
-	count = DIV_ROUND_UP((r->end - r->start + 1), SUN9I_MMC_WIDTH);
+	count = DIV_ROUND_UP((resource_size(r)), SUN9I_MMC_WIDTH);
 	data->membase = devm_ioremap_resource(&pdev->dev, r);
 	if (IS_ERR(data->membase))
 		return PTR_ERR(data->membase);