Add linker entries for the new libdexfiled_external.so.

Follow up to http://r.android.com/943476. This library is only available in
debug builds of the Runtime APEX.

Test: Flash and boot with eng build
Change-Id: I260f9b838f44ba3f8976c117d9e42fc456239e88
diff --git a/rootdir/etc/ld.config.legacy.txt b/rootdir/etc/ld.config.legacy.txt
index aa392ce..485bc75 100644
--- a/rootdir/etc/ld.config.legacy.txt
+++ b/rootdir/etc/ld.config.legacy.txt
@@ -53,11 +53,12 @@
 # Visible because some libraries are dlopen'ed, e.g. libopenjdk is dlopen'ed by
 # libart.
 namespace.default.visible = true
-namespace.default.link.runtime.shared_libs  = libdexfile_external.so
+namespace.default.link.runtime.shared_libs  = libandroidicu.so
+namespace.default.link.runtime.shared_libs += libdexfile_external.so
+namespace.default.link.runtime.shared_libs += libdexfiled_external.so
 namespace.default.link.runtime.shared_libs += libnativebridge.so
 namespace.default.link.runtime.shared_libs += libnativehelper.so
 namespace.default.link.runtime.shared_libs += libnativeloader.so
-namespace.default.link.runtime.shared_libs += libandroidicu.so
 
 # TODO(b/122876336): Remove libpac.so once it's migrated to Webview
 namespace.default.link.runtime.shared_libs += libpac.so