drm_hwcomposer: move header files into source directory

... to improve navigation between source/header file.
Unnecessary dependencies also removed.

Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
Change-Id: I2c3bf993b8c5f356490433fd94e90011487a1276
diff --git a/compositor/drmdisplaycomposition.cpp b/compositor/drmdisplaycomposition.cpp
index b710fe1..82d7194 100644
--- a/compositor/drmdisplaycomposition.cpp
+++ b/compositor/drmdisplaycomposition.cpp
@@ -17,20 +17,18 @@
 #define LOG_TAG "hwc-drm-display-composition"
 
 #include "drmdisplaycomposition.h"
-#include "drmcrtc.h"
-#include "drmdevice.h"
-#include "drmdisplaycompositor.h"
-#include "drmplane.h"
-#include "platform.h"
 
+#include <log/log.h>
 #include <stdlib.h>
+#include <sync/sync.h>
+#include <xf86drmMode.h>
 
 #include <algorithm>
 #include <unordered_set>
 
-#include <log/log.h>
-#include <sync/sync.h>
-#include <xf86drmMode.h>
+#include "drm/drmdevice.h"
+#include "drmdisplaycompositor.h"
+#include "platform/platform.h"
 
 namespace android {