display: Add HDMI CEC HAL

Implement the spec as per
hardware/libhardware/include/hardware/hdmi_cec.h

Change-Id: I02e1ba9deee1007b7e5922c363b9f5d6c6ad82a9
diff --git a/libhwcomposer/hwc_utils.h b/libhwcomposer/hwc_utils.h
index f11eed5..23157d4 100644
--- a/libhwcomposer/hwc_utils.h
+++ b/libhwcomposer/hwc_utils.h
@@ -35,6 +35,7 @@
 #include <overlayUtils.h>
 #include <overlayRotator.h>
 #include <EGL/egl.h>
+#include <QService.h>
 
 
 #define ALIGN_TO(x, align)     (((x) + ((align)-1)) & ~((align)-1))
@@ -687,6 +688,8 @@
     bool mHPDEnabled;
     //Used to notify that boot has completed
     bool mBootAnimCompleted;
+    // Display binder service
+    qService::QService* mQService;
 };
 
 namespace qhwc {