adb: don't emulate fdevent or socketpair on Windows.

Change-Id: I16cf7d4427eb79f36db39e91f85402a268fa72f5
(cherry picked from commit 3777d2ecc05d397ca501f4ee296e4e66568bb1bd)
diff --git a/adb/Android.mk b/adb/Android.mk
index b792bd4..7835d9f 100644
--- a/adb/Android.mk
+++ b/adb/Android.mk
@@ -50,6 +50,7 @@
     adb_listeners.cpp \
     adb_trace.cpp \
     adb_utils.cpp \
+    fdevent.cpp \
     sockets.cpp \
     transport.cpp \
     transport_local.cpp \
@@ -75,12 +76,10 @@
     $(ADB_COMMON_windows_CFLAGS) \
 
 LIBADB_darwin_SRC_FILES := \
-    fdevent.cpp \
     get_my_path_darwin.cpp \
     usb_osx.cpp \
 
 LIBADB_linux_SRC_FILES := \
-    fdevent.cpp \
     get_my_path_linux.cpp \
     usb_linux.cpp \