Fix build issues with external patch.

Change-Id: Ib5ea4338df179eb27e4ce9958ef42df1e3ac3eb1
diff --git a/cpu_ref/Android.mk b/cpu_ref/Android.mk
index 0199eee..c4e0ebf 100644
--- a/cpu_ref/Android.mk
+++ b/cpu_ref/Android.mk
@@ -51,7 +51,7 @@
     rsCpuIntrinsics_neon_ColorMatrix.S \
     rsCpuIntrinsics_neon_Blend.S \
     rsCpuIntrinsics_neon_Blur.S \
-    rsCpuIntrinsics_neon_YuvToRGB.S
+    rsCpuIntrinsics_neon_YuvToRGB.S \
     convolve/convolve_copy_neon.s \
     convolve/convolve_avg_neon.s \
     convolve/convolve8_neon.s \