logd: Allow (some) headers to be individually importable

LogReader.h needs to be individually importable.

Fix a few others, drop includes of local includes, let them be
included in source instead and allow headers to be included
alphabetically. Was not a complete audit since goal was to
separate LogReader.h out from the pack.

Bug: 27242723
Change-Id: Ic7759ef90995e5bd285810706af33550c73cf5b5
diff --git a/logd/LogReader.h b/logd/LogReader.h
index 91559a3..174ee65 100644
--- a/logd/LogReader.h
+++ b/logd/LogReader.h
@@ -18,8 +18,8 @@
 #define _LOGD_LOG_WRITER_H__
 
 #include <sysutils/SocketListener.h>
-#include "LogBuffer.h"
-#include "LogTimes.h"
+
+class LogBuffer;
 
 class LogReader : public SocketListener {
     LogBuffer &mLogbuf;