Add libm_hard to system lib list

Change-Id: I2873b4da325c7fa1822dc680257e5fcaa7284377
diff --git a/build/core/build-binary.mk b/build/core/build-binary.mk
index a5f014c..5653899 100644
--- a/build/core/build-binary.mk
+++ b/build/core/build-binary.mk
@@ -60,6 +60,7 @@
     jnigraphics \
     log \
     m \
+    m_hard \
     stdc++ \
     z \
     EGL \