platform: msm8994: Fix redundant macro definitions

Fix multiple definition of macros, to avoid compilation warnings.

Change-Id: Ia761b1d97f8fbdb90d84a287a3b688385080d15e
diff --git a/platform/msm_shared/mipi_dsi.c b/platform/msm_shared/mipi_dsi.c
index 9211dd3..f33d06a 100644
--- a/platform/msm_shared/mipi_dsi.c
+++ b/platform/msm_shared/mipi_dsi.c
@@ -35,6 +35,7 @@
 #include <string.h>
 #include <debug.h>
 #include <target/display.h>
+#include <mdp5.h>
 #include <platform/iomap.h>
 #include <platform/clock.h>
 #include <platform/timer.h>