w1: Add AXI 1-wire host driver for AMD programmable logic IP core

Add a host driver to support the AMD 1-Wire programmable logic IP block.
This block guarantees protocol timing for driving off-board devices such
as thermal sensors, proms, etc.

Add file to MAINTAINERS

Co-developed-by: Thomas Delev <thomas.delev@amd.com>
Signed-off-by: Thomas Delev <thomas.delev@amd.com>
Signed-off-by: Kris Chaplin <kris.chaplin@amd.com>
Link: https://lore.kernel.org/r/20231107180814.615933-3-kris.chaplin@amd.com


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>