MAINTAINERS: update Andi's e-mail

Because I will be leaving Samsung soon, update my e-mail address
to andi@etezian.org

For reachability update also mailcap.

CC: Krzysztof Kozlowski <krzk@kernel.org>
CC: Kukjin Kim <kgene@kernel.org>
CC: linux-samsung-soc@vger.kernel.org
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>