qcom: display: CEC bugfixes

* Correctly read and pass physical address
* Handle system control
* Use Google Vendor ID

Change-Id: I964fb4b590a0b952d7c8290aef6365d62a2418f0
diff --git a/libhwcomposer/hwc_uevents.cpp b/libhwcomposer/hwc_uevents.cpp
index e282b53..4d94647 100644
--- a/libhwcomposer/hwc_uevents.cpp
+++ b/libhwcomposer/hwc_uevents.cpp
@@ -161,7 +161,7 @@
                 ctx->mDrawLock.lock();
                 handle_online(ctx, dpy);
                 ctx->mDrawLock.unlock();
-
+                ctx->mQService->onHdmiHotplug(ctx->dpyAttr[dpy].connected);
                 ctx->proc->invalidate(ctx->proc);
                 break;
             } else {