tools: Add --platform arg to tools/clippy
tools: Add --platform arg to tools/clippy

BUG=b:257249038
TEST=CQ

Change-Id: Ife9a917b82508a97beda6c50e8d3d71dccfa520d
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4000811
Reviewed-by: Dennis Kempin <cd09796fb571bec2782819dbfd33307f65b1c778@google.com>
Commit-Queue: Vikram Auradkar <50abc1d85bedfd527fc7dee23f4819d1f0d946ec@google.com>

google/crosvm,google/crosvm,google/crosvm,google/crosvm