MAINTAINERS: w1: add Krzysztof Kozlowski as maintainer

MAINTAINERS: w1: add Krzysztof Kozlowski as maintainer

Evgeniy wrote that he no longer takes patches for 1-Wire/W1 subsystem,
so add Krzysztof Kozlowski to help reviewing and handling these.

Link: https://lore.kernel.org/all/bdcf41d5-cd61-1e95-0b21-b8fe401644bd@ioremap.net/
Cc: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230415093856.41948-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>