Fix adb, fastboot to compile in Windows SDK under Linux.

Change-Id: I3d0e4cabd65d9de17036901a22ec3277a6d58e64
diff --git a/adb/Android.mk b/adb/Android.mk
index 6325e53..0c93c1e 100644
--- a/adb/Android.mk
+++ b/adb/Android.mk
@@ -35,13 +35,18 @@
   USB_SRCS := usb_windows.c
   EXTRA_SRCS := get_my_path_windows.c
   EXTRA_STATIC_LIBS := AdbWinApi
-  LOCAL_C_INCLUDES += /usr/include/w32api/ddk development/host/windows/usb/api/
   ifneq ($(strip $(USE_CYGWIN)),)
+    # Pure cygwin case
     LOCAL_LDLIBS += -lpthread
-  else
+    LOCAL_C_INCLUDES += /usr/include/w32api/ddk
+  endif
+  ifneq ($(strip $(USE_MINGW)),)
+    # MinGW under Linux case
     LOCAL_LDLIBS += -lws2_32
     USE_SYSDEPS_WIN32 := 1
+    LOCAL_C_INCLUDES += /usr/i586-mingw32msvc/include/ddk
   endif
+  LOCAL_C_INCLUDES += development/host/windows/usb/api/
 endif
 
 LOCAL_SRC_FILES := \