dt-bindings: mediatek: Replace Tinghan Shen in maintainers

Emails to Tinghan Shen bounce permanently with "550 Relaying mail to
tinghan.shen@mediatek.com is not allowed (in reply to RCPT TO command)",
so switch to AngeloGioacchino Del Regno - Mediatek SoC platform
maintainer.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://patch.msgid.link/20260116172915.99811-2-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Author: krzk

Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml

@@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: MediaTek mt8186 DSP core
 
 maintainers:
-  - Tinghan Shen <tinghan.shen@mediatek.com>
+  - AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
 
 description: |
   MediaTek mt8186 SoC contains a DSP core used for

Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml

@@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: Mediatek SCP
 
 maintainers:
-  - Tinghan Shen <tinghan.shen@mediatek.com>
+  - AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
 
 description:
   This binding provides support for ARM Cortex M4 Co-processor found on some