copper: Enabling secure mode for MDSS

MDSS VBIF registers need secure access. Enabling
secure mode.

Change-Id: I235f9f95b12dc9d0446942b722271d8f29c1f1e8
diff --git a/platform/msm_shared/include/mdp5.h b/platform/msm_shared/include/mdp5.h
index 38b39df..2091ed1 100644
--- a/platform/msm_shared/include/mdp5.h
+++ b/platform/msm_shared/include/mdp5.h
@@ -98,6 +98,7 @@
 #define MMSS_MDP_SMP_ALLOC_R_0                  REG_MDP(0x0230)
 #define MMSS_MDP_SMP_ALLOC_R_1                  REG_MDP(0x0234)
 
+#define VBIF_VBIF_DDR_FORCE_CLK_ON              REG_MDP(0x24004)
 #define VBIF_VBIF_DDR_OUT_MAX_BURST             REG_MDP(0x240D8)
 
 void mdp_set_revision(int rev);