dck: pick up recovery mode library for digital car key wiping

This is done by pick optionally including a Makefile so that aosp builds
in which the library is not present will pass.

Bug: 203234558
Test: adb reboot recovery; wipe data via menu; verify keys removed
Signed-off-by: Jeffrey Carlyle <jcarlyle@google.com>
Change-Id: I53967a5e8ea0327d6467623929902b90eb2c85da
1 file changed