target: msm8974: Do not disable MDSS gdsc during off

Since MDSS GDSC is enabled in the SBL, we do not want to disable
it while reconfiguring the panels. This holds true only for
8974 target LK/SBL.

Change-Id: Ifade4dc16b7475e478f67b967b550f06fdcd98c4
diff --git a/target/msm8974/target_display.c b/target/msm8974/target_display.c
index 92abb38..22568e8 100644
--- a/target/msm8974/target_display.c
+++ b/target/msm8974/target_display.c
@@ -142,7 +142,6 @@
 		// * Add here for continuous splash  *
 		mmss_clock_disable(dual_dsi);
 		mdp_clock_disable(dual_dsi);
-		mdp_gdsc_ctrl(enable);
 	}
 
 	return NO_ERROR;
@@ -324,14 +323,13 @@
 	default:
 		do {
 			ret = gcdb_display_init(MDP_REV_50, MIPI_FB_ADDR);
-			if (ret) {
+			if (!ret || ret == ERR_NOT_SUPPORTED) {
+				break;
+			} else {
 				target_force_cont_splash_disable(true);
 				msm_display_off();
 				target_force_cont_splash_disable(false);
 			}
-			else {
-				break;
-			}
 		} while (++panel_loop <= oem_panel_max_auto_detect_panels());
 		break;
 	}