Enable jemalloc on host bionic am: ba738bb2f2 am: 7b855b38b6
am: 1784466740

Change-Id: I745b3e62324defba50681b2bd3efa8e4fe956461
diff --git a/Android.bp b/Android.bp
index 0377fd9..b2cfeb8 100644
--- a/Android.bp
+++ b/Android.bp
@@ -68,6 +68,7 @@
 
 cc_defaults {
     name: "jemalloc_defaults",
+    defaults: ["linux_bionic_supported"],
     cflags: common_cflags,
 
     product_variables: common_product_variables,