Enable ld-android on linux_bionic builds

Bug: 31559095
Test: Enable host bionic, run soong
Change-Id: If94927c66c0c2dc74c213ca403d45e73508b0025
diff --git a/libdl/Android.bp b/libdl/Android.bp
index 013554a..5b67e38 100644
--- a/libdl/Android.bp
+++ b/libdl/Android.bp
@@ -104,6 +104,7 @@
     stl: "none",
 
     name: "ld-android",
+    defaults: ["linux_bionic_supported"],
 
     // NOTE: libdl needs __aeabi_unwind_cpp_pr0 from libgcc.a but libgcc.a needs a
     // few symbols from libc. Using --no-undefined here results in having to link