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/services/inputflinger/host/InputFlinger.cpp b/services/inputflinger/host/InputFlinger.cpp
index 8edea3f..f1d3726 100644
--- a/services/inputflinger/host/InputFlinger.cpp
+++ b/services/inputflinger/host/InputFlinger.cpp
@@ -20,10 +20,10 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-#include <android/log.h>
 #include <binder/IPCThreadState.h>
 #include <binder/PermissionCache.h>
 #include <hardware/input.h>
+#include <log/log.h>
 #include <private/android_filesystem_config.h>
 
 #include "InputFlinger.h"