dt-bindings: vendor: add taiguanck

dt-bindings: vendor: add taiguanck

Add the "taiguanck" vendor prefix for Shenzhen Top Group Technology Co., Ltd.

The prefix is derived from the vendor's website domain:
www.taiguanck.com/en/, which uses "taiguanck" as the primary
identifier of the company.

Signed-off-by: Langyan Ye <yelangyan@huaqin.corp-partner.google.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260214085409.3489057-2-yelangyan@huaqin.corp-partner.google.com