[openssl/openssl] 3f348a: Fix aarch64 signed bit shift issue found by UBSAN

[Tomas Mraz]

  Branch: refs/heads/openssl-3.0
  Home:   https://github.openssl.org/openssl/openssl
  Commit: 3f348a0f6c3138791740043b2c924a9d85865d85
      https://github.openssl.org/openssl/openssl/commit/3f348a0f6c3138791740043b2c924a9d85865d85
  Author: Tom Cosgrove <tom.cosgrove at arm.com>
  Date:   2022-07-19 (Tue, 19 Jul 2022)

  Changed paths:
    M crypto/arm_arch.h

  Log Message:
  -----------
  Fix aarch64 signed bit shift issue found by UBSAN

Fixes #18813

Signed-off-by: Tom Cosgrove <tom.cosgrove at arm.com>

Change-Id: Ic543885091ed3ef2ddcbe21de0a4ac0bca1e2494

Reviewed-by: Paul Dale <pauli at openssl.org>
Reviewed-by: Matt Caswell <matt at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18816)

(cherry picked from commit 1efd8533e1ccc5c5e69795eb393a6b79b62e48e2)