Make avbtool compile for both arch

Test: make fec_unittest
Bug: 177450457
Change-Id: I8fae33659f3d8b91f3e79de328d4b49a9cb6679e
diff --git a/Android.bp b/Android.bp
index a9bd385..2cb7123 100644
--- a/Android.bp
+++ b/Android.bp
@@ -88,7 +88,13 @@
         },
         py3: {
             enabled: true,
-            embedded_launcher: true,
+        },
+    },
+    // Need both lib to be used as data for cc_test (which default to "both")
+    compile_multilib: "both",
+    multilib: {
+        lib32: {
+            suffix: "32",
         },
     },
 }