link with libXv

Signed-off-by: Austin Yuan <shengquan.yuan@intel.com>
diff --git a/src/Makefile.am b/src/Makefile.am
index 47c0b7d..425b665 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -23,7 +23,7 @@
 libva_la_LTLIBRARIES = libva.la
 libva_ladir = $(libdir)
 libva_la_LDFLAGS = -version-number 0:30:0 -no-undefined
-libva_la_LIBADD = -ldl -lX11 -lXext -lXfixes -lXdamage X11/libva_X11.la
+libva_la_LIBADD = -ldl -lX11 -lXext -lXfixes -lXdamage -lXv X11/libva_X11.la
 
 SUBDIRS = X11