drm_hwcomposer: Rename DrmResources to DrmDevice

DrmDevice is a better name to reflect the fact that DrmResources/
DrmDevice can handle just one dri node.

Suggested here [1] by Sean Paul.
[1] https://lists.freedesktop.org/archives/dri-devel/2018-April/173290.html

Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
diff --git a/platformdrmgeneric.cpp b/platformdrmgeneric.cpp
index 7c4758d..a1198bf 100644
--- a/platformdrmgeneric.cpp
+++ b/platformdrmgeneric.cpp
@@ -16,7 +16,7 @@
 
 #define LOG_TAG "hwc-platform-drm-generic"
 
-#include "drmresources.h"
+#include "drmdevice.h"
 #include "platform.h"
 #include "platformdrmgeneric.h"
 
@@ -32,7 +32,7 @@
 
 #ifdef USE_DRM_GENERIC_IMPORTER
 // static
-Importer *Importer::CreateInstance(DrmResources *drm) {
+Importer *Importer::CreateInstance(DrmDevice *drm) {
   DrmGenericImporter *importer = new DrmGenericImporter(drm);
   if (!importer)
     return NULL;
@@ -47,7 +47,7 @@
 }
 #endif
 
-DrmGenericImporter::DrmGenericImporter(DrmResources *drm) : drm_(drm) {
+DrmGenericImporter::DrmGenericImporter(DrmDevice *drm) : drm_(drm) {
 }
 
 DrmGenericImporter::~DrmGenericImporter() {
@@ -141,7 +141,7 @@
 }
 
 #ifdef USE_DRM_GENERIC_IMPORTER
-std::unique_ptr<Planner> Planner::CreateInstance(DrmResources *) {
+std::unique_ptr<Planner> Planner::CreateInstance(DrmDevice *) {
   std::unique_ptr<Planner> planner(new Planner);
   planner->AddStage<PlanStageGreedy>();
   return planner;