MAINTAINERS: crypto: s5p-sss: drop Kamil Konieczny

E-mails to Kamil Konieczny to his Samsung address bounce with 550 (User
unknown).  Kamil no longer takes care about Samsung S5P SSS driver so
remove the invalid email address from:
 - mailmap,
 - bindings maintainer entries,
 - maintainers entry for S5P Security Subsystem crypto accelerator.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>