MAINTAINER: samsung: document dtbs_check requirement for Samsung

Samsung ARM/ARM64 SoCs (including legacy S3C64xx and S5PV210) are also
expected not to bring any new dtbs_check warnings.  In fact this have
been already enforced and tested since few release.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20230723131924.78190-3-krzysztof.kozlowski@linaro.org


Signed-off-by: Arnd Bergmann <arnd@arndb.de>