platform: msm_shared: Update wait in panel on for dual dsi

Use the wait duration configured by panel header to
configure the sleep after each panel on command
in dual dsi panel scenario.

Change-Id: I208e3bb16ac8afebda735abb4a12158befc4fd86
diff --git a/platform/msm_shared/mipi_dsi.c b/platform/msm_shared/mipi_dsi.c
index 1007b1d..9dfbd8b 100644
--- a/platform/msm_shared/mipi_dsi.c
+++ b/platform/msm_shared/mipi_dsi.c
@@ -199,7 +199,10 @@
 		writel(cm->size, MIPI_DSI1_BASE + DMA_CMD_LENGTH);	// reg 0x48 for this build
 		dsb();
 		ret += mdss_dual_dsi_cmd_dma_trigger_for_panel();
-		udelay(80);
+		if (cm->wait)
+			mdelay(cm->wait);
+		else
+			udelay(80);
 		cm++;
 	}
 #endif