ALSA: x86: fix resource_size.cocci warnings

sound/x86/intel_hdmi_lpe_audio.c:498:24-27: ERROR: Missing resource_size with res_mmio

 Use resource_size function on resource object
 instead of explicit computation.

Generated by: scripts/coccinelle/api/resource_size.cocci

CC: Jerome Anand <jerome.anand@intel.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/x86/intel_hdmi_lpe_audio.c

@@ -496,8 +496,7 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
 		(unsigned int)res_mmio->end);
 
 	mmio_start = ioremap_nocache(res_mmio->start,
-				(size_t)((res_mmio->end -
-					res_mmio->start) + 1));
+				     (size_t)(resource_size(res_mmio)));
 	if (!mmio_start) {
 		dev_err(&hlpe_pdev->dev, "Could not get ioremap\n");
 		return -EACCES;