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/platformhisi.cpp b/platformhisi.cpp
index d4428d0..3ff355f 100644
--- a/platformhisi.cpp
+++ b/platformhisi.cpp
@@ -16,7 +16,7 @@
 
 #define LOG_TAG "hwc-platform-hisi"
 
-#include "drmresources.h"
+#include "drmdevice.h"
 #include "platform.h"
 #include "platformhisi.h"
 
@@ -35,7 +35,7 @@
 
 namespace android {
 
-Importer *Importer::CreateInstance(DrmResources *drm) {
+Importer *Importer::CreateInstance(DrmDevice *drm) {
   HisiImporter *importer = new HisiImporter(drm);
   if (!importer)
     return NULL;
@@ -49,7 +49,8 @@
   return importer;
 }
 
-HisiImporter::HisiImporter(DrmResources *drm) : DrmGenericImporter(drm), drm_(drm) {
+HisiImporter::HisiImporter(DrmDevice *drm)
+    : DrmGenericImporter(drm), drm_(drm) {
 }
 
 HisiImporter::~HisiImporter() {
@@ -132,7 +133,7 @@
   return ret;
 }
 
-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;