Use globbing to fetch mac_permissions.xml.

Android master puts that file at a different location, so use similar
logic to official signing script.

TEST="sign_android_image.sh passed locally for both caroline (NYC) &
caroline-bertha (master)."
BUG=b:65610114
BRANCH=none

Change-Id: If33bfbcaa7e6cff95f26ff26a91735c87880f3db
Reviewed-on: https://chromium-review.googlesource.com/686046
Commit-Ready: Garfield Tan <xutan@chromium.org>
Tested-by: Garfield Tan <xutan@chromium.org>
Reviewed-by: Victor Hsieh <victorhsieh@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed