one more step toward HDMI support

getDisplayInfo() now returns proper information for
HWC managed displays.

hotplug is sitll not supported; so this is not fully correct
as the information returned will be bogus if the HDMI screen
is not plugged in.

Bug: 7191563
Change-Id: If55d8e829fae0443571548155007f486cdf9bc9f
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index f253ecc..4156332 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -274,7 +274,7 @@
     inline void vsync(int disp, int64_t timestamp);
     inline void hotplug(int disp, int connected);
 
-    void queryDisplayProperties(int disp);
+    status_t queryDisplayProperties(int disp);
 
     status_t setFramebufferTarget(int32_t id,
             const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buf);