[openssl/openssl] 6181a3: riscv: aes: dual-license under Apache + 2-clause BSD

[openssl-machine]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 6181a333670199d20fb60028807edba44899e8d5
      https://github.com/openssl/openssl/commit/6181a333670199d20fb60028807edba44899e8d5
  Author: Heiko Stuebner <heiko.stuebner at vrull.eu>
  Date:   2023-06-11 (Sun, 11 Jun 2023)

  Changed paths:
    M crypto/aes/asm/aes-riscv32-zkn.pl
    M crypto/aes/asm/aes-riscv64-zkn.pl

  Log Message:
  -----------
  riscv: aes: dual-license under Apache + 2-clause BSD

To allow re-use of the already reviewed openSSL crypto code for RISC-V in
other projects - like the Linux kernel, add a second license (2-clause BSD)
to the 32+64bit aes implementations using the Zkn extension.

Signed-off-by: Heiko Stuebner <heiko.stuebner at vrull.eu>

Reviewed-by: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
Reviewed-by: Todd Short <todd.short at me.com>
(Merged from https://github.com/openssl/openssl/pull/21018)