Fix build.

Due to a bug (fixed by 	59163bf2f15e28712be6598144ae0fdb94dac52b),
libstagefright_yuv.so was actually not prelinked.

Change-Id: Idbc9b968708d0fc31a087d2e4f24398072d915e2
diff --git a/media/libstagefright/yuv/Android.mk b/media/libstagefright/yuv/Android.mk
index 0794ad1..7697e3c 100644
--- a/media/libstagefright/yuv/Android.mk
+++ b/media/libstagefright/yuv/Android.mk
@@ -10,4 +10,6 @@
 
 LOCAL_MODULE:= libstagefright_yuv
 
+LOCAL_PRELINK_MODULE := false
+
 include $(BUILD_SHARED_LIBRARY)