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/Android.bp b/Android.bp
index 7046837..ef8af52 100644
--- a/Android.bp
+++ b/Android.bp
@@ -20,7 +20,10 @@
 
     srcs: ["utils/worker.cpp"],
 
-    include_dirs: ["external/drm_hwcomposer/include"],
+    include_dirs: [
+        "external/drm_hwcomposer/include",
+        "external/drm_hwcomposer",
+    ],
 
     cflags: [
         "-Wall",
@@ -47,7 +50,10 @@
         "libutils",
     ],
 
-    include_dirs: ["external/drm_hwcomposer/include"],
+    include_dirs: [
+        "external/drm_hwcomposer/include",
+        "external/drm_hwcomposer",
+    ],
 
     static_libs: ["libdrmhwc_utils"],