Allow use of newer versions of the libc crate.
Allow use of newer versions of the libc crate.

BUG=None
TEST=emerge-${BOARD} crosvm # and manual testing.

Change-Id: I1b7f0cd95aac327eeba86e2512a4fad1bf8b150e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1899220
Tested-by: Allen Webb <880184b418addffb87cd9c8e8e882ca6764ac96b@google.com>
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Reviewed-by: Stephen Barber <7719587e4b5a49340661b214ec85602f3918d06f@chromium.org>
Commit-Queue: Allen Webb <880184b418addffb87cd9c8e8e882ca6764ac96b@google.com>

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