Added flag for cropped scaling mode

NATIVE_WINDOW_SCALING_MODE_CROP forces the SurfaceTexture
to match the crop rect's aspect ratio to that of the window.

Change-Id: Id126b106eac06fd34d2d650a1bc66ffbac26c501
diff --git a/include/system/window.h b/include/system/window.h
index 9602445..08ae114 100644
--- a/include/system/window.h
+++ b/include/system/window.h
@@ -276,6 +276,10 @@
     NATIVE_WINDOW_SCALING_MODE_FREEZE           = 0,
     /* the buffer is scaled in both dimensions to match the window size */
     NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW  = 1,
+    /* the buffer is scaled uniformly such that the smaller dimension
+     * of the buffer matches the window size (cropping in the process)
+     */
+    NATIVE_WINDOW_SCALING_MODE_SCALE_CROP       = 2,
 };
 
 /* values returned by the NATIVE_WINDOW_CONCRETE_TYPE query */