Add libstagefright_soft_flacdec to atv_base.mk

Test: Play test file from b/37787245
Bug: 37794552
Change-Id: Ifa3dc152cbf2bdb26dfd6e2723990e55d6356416
diff --git a/products/atv_base.mk b/products/atv_base.mk
index fb545e2..4d707f4 100644
--- a/products/atv_base.mk
+++ b/products/atv_base.mk
@@ -43,6 +43,7 @@
     libstagefright_soft_amrwbenc \
     libstagefright_soft_avcdec \
     libstagefright_soft_avcenc \
+    libstagefright_soft_flacdec \
     libstagefright_soft_flacenc \
     libstagefright_soft_g711dec \
     libstagefright_soft_gsmdec \