Replace cutils/log.h and rationalize log/log.h and android/log.h

- cutils/log.h treat as deprecated and lead by example
- android/log.h to be used instead of log/log.h if possible
- add system includes that are assumed as side effects
- define LOG_TAG first

Test: compile
Bug: 31289077
Bug: 30465923
Change-Id: I8d99b24c333578c9b5aa9f2a01324bd0bba268dd
diff --git a/libs/ui/GraphicBufferAllocator.cpp b/libs/ui/GraphicBufferAllocator.cpp
index 9655dd2..f885309 100644
--- a/libs/ui/GraphicBufferAllocator.cpp
+++ b/libs/ui/GraphicBufferAllocator.cpp
@@ -18,8 +18,7 @@
 #define LOG_TAG "GraphicBufferAllocator"
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
-#include <android/log.h>
-
+#include <log/log.h>
 #include <utils/Singleton.h>
 #include <utils/String8.h>
 #include <utils/Trace.h>