Fix mips and x86 builds

Change-Id: Idda2494876fd6bf64b3efe6de2e384da9b6a0dbc
diff --git a/libm/libm.x86.map b/libm/libm.x86.map
index ac9fb11..8aa6d88 100644
--- a/libm/libm.x86.map
+++ b/libm/libm.x86.map
@@ -272,4 +272,7 @@
     *;
 };
 
+LIBC_PRIVATE { # arm x86 mips
+  global: # arm x86 mips
     __muldc3; # arm x86 mips
+} LIBC; # arm x86 mips