floss_patches: Fix wrong message for building floss-upstream BUG=None TEST=None Change-Id: I514bd6c8abc8f84785f9ab56d3b9038363809d08 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/bluetooth/+/7133039 Reviewed-by: Michael Sun <[email protected]> Commit-Queue: Michael Sun <[email protected]> Auto-Submit: Hsin-chen Chuang <[email protected]> Tested-by: Hsin-chen Chuang <[email protected]>