target: msm8952: add support for SSC feature for DSI 12nm PLL

Add support for DSI SSC feature for 12nm PLL on SDM439/SDM429
target.

Change-Id: I72c5966bfc1b27a246526453eaeac38ac853c908
diff --git a/target/msm8952/target_display.c b/target/msm8952/target_display.c
index bed0f4d..05e807e 100644
--- a/target/msm8952/target_display.c
+++ b/target/msm8952/target_display.c
@@ -356,6 +356,11 @@
 		pll_data->is_center_spread = false;
 		pll_data->ssc_freq = 30000;
 		pll_data->ssc_ppm = 5000;
+	} else if (platform_is_sdm439() || platform_is_sdm429()) {
+		pll_data->ssc_en = true;
+		pll_data->is_center_spread = false;
+		pll_data->ssc_freq = 31500;
+		pll_data->ssc_ppm = 5000;
 	}
 
 	if (enable) {