dt-bindings: gpio: gpio-delay: Use Alexander's email

Group/anonymous mailboxes are not accepted for bindings maintainers, so
switch from such linux @tq mailbox to Alexander's email.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://patch.msgid.link/20260212110905.52842-2-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

Author: krzk

Documentation/devicetree/bindings/gpio/gpio-delay.yaml

@@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: GPIO delay controller
 
 maintainers:
-  - Alexander Stein <linux@ew.tq-group.com>
+  - Alexander Stein <alexander.stein@ew.tq-group.com>
 
 description: |
   This binding describes an electrical setup where setting an GPIO output