build_library: Change the disk MiniOS partition names

BUG=b:186242597
TEST=./build_images

Change-Id: I995bcc3b1c51344bd00c62c906a6a0363dc78398
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/2871108
Tested-by: Vyshu Khota <vyshu@google.com>
Commit-Queue: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Jae Hoon Kim <kimjae@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed