init.rc: add missing /dev/fd symlink

The Linux kernel implicitly expects /dev/fd to symlink to /proc/self/fd.

This change fixes the exec/execveat.c kernel selftest.

Change-Id: Ia08d50023336fdbfc098527299c326d9d59039a9
Signed-off-by: Greg Hackmann <ghackmann@google.com>
1 file changed