drm_hwcomposer: Use pragma once instead of include guards

Some of existing include guards were copy-pasted without modification,
therefore have incorrect name. Switch to 'pragma once' in order to fix
it and avoid such copy-paste issues in the future.

Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
diff --git a/utils/UniqueFd.h b/utils/UniqueFd.h
index f0855ba..f65bedc 100644
--- a/utils/UniqueFd.h
+++ b/utils/UniqueFd.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef UNIQUEFD_H_
-#define UNIQUEFD_H_
+#pragma once
 
 #include <fcntl.h>
 #include <unistd.h>
@@ -114,5 +113,3 @@
 };
 
 }  // namespace android
-
-#endif
diff --git a/utils/Worker.h b/utils/Worker.h
index 74cfdc4..b524d37 100644
--- a/utils/Worker.h
+++ b/utils/Worker.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_WORKER_H_
-#define ANDROID_WORKER_H_
+#pragma once
 
 #include <condition_variable>
 #include <cstdint>
@@ -78,4 +77,3 @@
   bool initialized_;
 };
 }  // namespace android
-#endif
diff --git a/utils/log.h b/utils/log.h
index a48d2e7..22200df 100644
--- a/utils/log.h
+++ b/utils/log.h
@@ -1,5 +1,20 @@
-#ifndef UTILS_LOG_H_
-#define UTILS_LOG_H_
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
 
 #ifdef ANDROID
 
@@ -22,5 +37,3 @@
 #define ALOGV(args...) printf("VERBOSE: " args)
 
 #endif
-
-#endif
\ No newline at end of file
diff --git a/utils/properties.h b/utils/properties.h
index 0b49c61..e400236 100644
--- a/utils/properties.h
+++ b/utils/properties.h
@@ -1,5 +1,20 @@
-#ifndef UTILS_PROPERTIES_H_
-#define UTILS_PROPERTIES_H_
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
 
 #ifdef ANDROID
 
@@ -25,5 +40,3 @@
 }
 
 #endif
-
-#endif
\ No newline at end of file