Show linker configuration files generated in the ART chroot environment.

Have `tools/buildbot-sync.sh` display the list of generated linker
configuration files after running `linkerconfig` within the on-device
chroot environment.

Test: art/tools/buildbot-build.sh --target \
        && art/tools/buildbot-setup-device.sh
        && art/tools/buildbot-sync.sh
Bug: 149376737

Change-Id: Id7103a528562aa15f40594c9dddec09fb444a1de
1 file changed