[fuchsia] Update the local-sdk.py script.

Building the SDK now requires two different targets and archives to
untar.

Change-Id: I92d82f2616afad0723eab66d54bc9de279358bcf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1583181
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653869}
1 file changed