[openssl/openssl] e8dc77: Update CMAC test cases.

[Fisher Yu]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: e8dc77f85f251752258203cf9cbfa077fd8b3173
      https://github.com/openssl/openssl/commit/e8dc77f85f251752258203cf9cbfa077fd8b3173
  Author: fisher.yu <fisher.yu at arm.com>
  Date:   2023-06-12 (Mon, 12 Jun 2023)

  Changed paths:
    M crypto/cmac/cmac.c
    M test/cmactest.c

  Log Message:
  -----------
  Update CMAC test cases.

    1. Update cmac test cases, fullfilling test data by short string
       instead of using long string directly.
    2. Modify the wording of comments in cmac.c

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21177)