drm_hwcomposer: use CamelCase in source/header files related to class

Main goal is to increase readability of file names.
AOSP uses camelcase for files in many projects.
Lets do the same for drm_hwcomposer.

Keep platform/ directory as is, since class names is different from file names.

Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
Change-Id: I7e992357851c2a86711f4da1241c4d507359e56b
diff --git a/platform/platform.h b/platform/platform.h
index e0befdb..13dc360 100644
--- a/platform/platform.h
+++ b/platform/platform.h
@@ -23,7 +23,7 @@
 #include <map>
 #include <vector>
 
-#include "compositor/drmdisplaycomposition.h"
+#include "compositor/DrmDisplayComposition.h"
 #include "drmhwcomposer.h"
 
 namespace android {