MAINTAINERS: add linux-amlogic list for amlogic crypto

The linux-amlogic mailing list need to be in copy of all patch for the amlogic crypto.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>