dt-bindings: update Krzysztof Kozlowski's email

Krzysztof Kozlowski's @canonical.com email stopped working, so switch to
generic @kernel.org account for all Devicetree bindings.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20220330074016.12896-2-krzysztof.kozlowski@linaro.org
diff --git a/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml b/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml
index 84051b0..c262305 100644
--- a/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml
@@ -7,7 +7,7 @@
 title: Samsung S3C/S5P/Exynos SoC I2C Controller
 
 maintainers:
-  - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+  - Krzysztof Kozlowski <krzk@kernel.org>
 
 properties:
   compatible: