kvm: silence clippy warning about pointer alignment
kvm: silence clippy warning about pointer alignment

Ignore the clippy warning about pointer alignment in casts in
set_thread_id(), matching the existing annotation for set_data().

run_mmap is sufficiently aligned, since it is a mmap-ed region with at
least page alignment.

Fixes this clippy error:

  casting from `*mut u8` to a more-strictly-aligned pointer (`*mut
  kvm_sys::x86::bindings::kvm_run`) (1 < 8 bytes)

BUG=None
TEST=bin/clippy

Change-Id: I4c33385d081d785002dda2d589eeb3ed10a92bfc
Signed-off-by: Daniel Verkamp <72bc170b46ec491f7bdd4359a1c0bfed274de40c@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1896089
Reviewed-by: Zach Reizner <3374927928a53d04457674c546bd4de57c2044ec@chromium.org>
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>

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