MAINTAINERS: update Krzysztof Kozlowski's email to Linaro

Use Krzysztof Kozlowski's @linaro.org account in maintainer entries.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20220330074016.12896-3-krzysztof.kozlowski@linaro.org