msm7627a: Pass clock rate value to mdp clock

Set the right mdp clock rate during panel init code &
use the same during mdp clock initialization.

Change-Id: I492ea5299d3a6619c4ad7502ec4386d7b7f1ae14
diff --git a/target/msm7627a/target_display.c b/target/msm7627a/target_display.c
index 37e809b..d92dd1e 100644
--- a/target/msm7627a/target_display.c
+++ b/target/msm7627a/target_display.c
@@ -42,9 +42,12 @@
 static int msm7627a_mdp_clock_init(int enable)
 {
 	int ret = 0;
+	unsigned rate = 0;
+
+	rate = panel.panel_info.clk_rate;
 
 	if (enable)
-		mdp_clock_init();
+		mdp_clock_init(rate);
 	else
 		mdp_clock_disable();
 	return ret;