adb: move fdevent to its own folder.

Preparatory refactoring for platform-specific implementations.

Test: mma
Change-Id: I0f600122ac89241788c5f3300f362fd9ef02ddcd
diff --git a/adb/daemon/auth.cpp b/adb/daemon/auth.cpp
index 00268a7..2b8f461 100644
--- a/adb/daemon/auth.cpp
+++ b/adb/daemon/auth.cpp
@@ -19,7 +19,7 @@
 #include "adb.h"
 #include "adb_auth.h"
 #include "adb_io.h"
-#include "fdevent.h"
+#include "fdevent/fdevent.h"
 #include "sysdeps.h"
 #include "transport.h"