Enable libcxxabi on host bionic

Bug: 31559095
Test: Test linux_bionic compile
Change-Id: I2e532e1d558d9d9e770da410034ca87f9a3685ca
diff --git a/Android.bp b/Android.bp
index d9e8617..e5c613c 100644
--- a/Android.bp
+++ b/Android.bp
@@ -86,6 +86,10 @@
             cflags: ["-integrated-as"],
             cppflags: ["-integrated-as"],
         },
+        linux_bionic: {
+            cppflags: ["-DHAVE___CXA_THREAD_ATEXIT_IMPL"],
+            enabled: true,
+        },
     },
 
 }