tree ba5c7a575add711589a21a5b1b1527094e42c8ca
parent 70e5e67a4dc7cee0c69eaf9f5cc07b201a59cb59
author Simon Glass <sjg@chromium.org> 1594149110 -0600
committer Bin Meng <bmeng.cn@gmail.com> 1594967544 +0800

acpigen: Support writing a length

It is convenient to write a length value for preceding a block of data.
Of course the length is not known or is hard to calculate a priori. So add
a way to mark the start on a stack, so the length can be updated when
known.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>