gmp: upgraded package to upstream

Upgraded dev-libs/gmp to version 6.2.1-r1 on amd64, arm

BUG=chromium:1220056
TEST=FEATURES="test" emerge dev-libs/gmp

Cq-Depend: chromium:2971083
Change-Id: Iee418393ce547f109cf9ed84f9a9f1e2bf893398
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2964179
Tested-by: Manoj Gupta <manojgupta@chromium.org>
Commit-Queue: T.J. Alumbaugh <talumbau@google.com>
Reviewed-by: Bob Brandt <brndt@google.com>
Reviewed-by: Sergey Frolov <sfrolov@google.com>
9 files changed