Turn on XOM for libc

Test: bionic-unit-tests
Bug: 122993569
Bug: 123241361
Change-Id: Ibce7bd9dc45c39a27fee33fd0566483dd8427cce
diff --git a/libc/Android.bp b/libc/Android.bp
index 489918b..262d951 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -85,8 +85,6 @@
             no_libcrt: true,
         },
     },
-    // TODO(ivanlozano): Remove after b/118321713
-    xom: false,
 }
 
 // ========================================================