fix a bug where FLIP_H would do a 180 rotation

Change-Id: Ie2cc4a8543a5625750c8596f87edcb66fcbca31f
diff --git a/services/surfaceflinger/LayerBase.cpp b/services/surfaceflinger/LayerBase.cpp
index 758b408..069b85a 100644
--- a/services/surfaceflinger/LayerBase.cpp
+++ b/services/surfaceflinger/LayerBase.cpp
@@ -444,11 +444,11 @@
     }
     if (transform & HAL_TRANSFORM_FLIP_V) {
         swap(vLT, vLB);
-        swap(vRB, vRT);
+        swap(vRT, vRB);
     }
     if (transform & HAL_TRANSFORM_FLIP_H) {
-        swap(vLT, vRB);
-        swap(vLB, vRT);
+        swap(vLT, vRT);
+        swap(vLB, vRB);
     }
 
     TexCoords texCoords[4];