ASoC: ti: davinci-mcasp: Use DIV_ROUND_UP() instead of open-coding it

Use DIV_ROUND_UP() instead of open-coding it, which intents and makes it
more clear what is going on for the casual reviewer.

The Coccinelle references Commit e4d8aef2 ("ALSA: usb: Use
DIV_ROUND_UP() instead of open-coding it").
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Link: https://lore.kernel.org/r/20220927140948.17696-5-shangxiaojing@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/ti/davinci-mcasp.c

@@ -869,7 +869,7 @@ static int mcasp_common_hw_param(struct davinci_mcasp *mcasp, int stream,
 	if (mcasp->op_mode == DAVINCI_MCASP_DIT_MODE)
 		max_active_serializers = 1;
 	else
-		max_active_serializers = (channels + slots - 1) / slots;
+		max_active_serializers = DIV_ROUND_UP(channels, slots);
 
 	/* Default configuration */
 	if (mcasp->version < MCASP_VERSION_3)
@@ -1002,8 +1002,7 @@ static int mcasp_i2s_hw_param(struct davinci_mcasp *mcasp, int stream,
 	 */
 	if (mcasp->tdm_mask[stream]) {
 		active_slots = hweight32(mcasp->tdm_mask[stream]);
-		active_serializers = (channels + active_slots - 1) /
-			active_slots;
+		active_serializers = DIV_ROUND_UP(channels, active_slots);
 		if (active_serializers == 1)
 			active_slots = channels;
 		for (i = 0; i < total_slots; i++) {
@@ -1014,7 +1013,7 @@ static int mcasp_i2s_hw_param(struct davinci_mcasp *mcasp, int stream,
 			}
 		}
 	} else {
-		active_serializers = (channels + total_slots - 1) / total_slots;
+		active_serializers = DIV_ROUND_UP(channels, total_slots);
 		if (active_serializers == 1)
 			active_slots = channels;
 		else