[libfmq] Finish rolling zerocopy

Bug: 367420574
Change-Id: Ib0fff4a36edc1daf74eabefb3c5ce11b958cfc8b
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/android.googlesource.com/platform/system/libfmq/+/1121534
Reviewed-by: Adam Barth <abarth@google.com>
1 file changed