[VP] Fix kw issue

Fix kw issue of uninitialized variable

Change-Id: I35be64b49591a60473ab1504f821503f2e3ce7a4
diff --git a/media_driver/agnostic/common/vp/hal/vphal.cpp b/media_driver/agnostic/common/vp/hal/vphal.cpp
index 236f2be..1a6b347 100755
--- a/media_driver/agnostic/common/vp/hal/vphal.cpp
+++ b/media_driver/agnostic/common/vp/hal/vphal.cpp
@@ -59,6 +59,7 @@
     CompositionMode     =   VPHAL_NO_COMPOSITION;
     DiScdMode           =   false;
     VEFeatureInUse      =   false;
+    HDRMode             =   VPHAL_HDR_MODE_NONE;
 }
 
 //!