disp: msm: dp: correct the resolution width check in get_mode_info

Use two layer mixers only if the resolution of the display exceeds
the linewidth of the given layer mixer.

Change-Id: I1892587816c0718280765353df7eabf82d6d7a18

msm/dp/dp_drm.c

@@ -381,7 +381,7 @@ int dp_connector_get_mode_info(struct drm_connector *connector,
 	dp_panel = sde_conn->drv_panel;
 
 	topology = &mode_info->topology;
-	topology->num_lm = (avail_res->max_mixer_width <= drm_mode->hdisplay) ?
+	topology->num_lm = (avail_res->max_mixer_width < drm_mode->hdisplay) ?
 							dual_lm : single_lm;
 	topology->num_enc = no_enc;
 	topology->num_intf = single_intf;