disp: rotator: update mapped buffer size retrieval from sg_table

This change corrects the logic of accumulated size
of mapped entries of sg table for DMA BUFFER.

Change-Id: I2baef8d438cab8314c5526aac2ea8a3227176888
Signed-off-by: Gaurav LNU <quic_glnu@quicinc.com>
Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com>

rotator/sde_rotator_util.c

@@ -930,7 +930,7 @@ static int sde_mdp_map_buffer(struct sde_mdp_img_data *data, bool rotator,
 		data->srcp_table = sgt;
 
 		data->len = 0;
-		for_each_sg(sgt->sgl, sg, sgt->nents, i) {
+		for_each_sgtable_sg(sgt, sg, i) {
 			data->len += sg->length;
 		}