dt-bindings: vendor-prefixes: Add Tang Cheng (TCS)

Shenzhen City Tang Cheng Technology (http://www.tctek.cn/)
is a power management IC manufacturer.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Link: https://lore.kernel.org/r/20210421210338.43819-1-ezequiel@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1101,6 +1101,8 @@ patternProperties:
     description: Trusted Computing Group
   "^tcl,.*":
     description: Toby Churchill Ltd.
+  "^tcs,.*":
+    description: Shenzhen City Tang Cheng Technology Co., Ltd.
   "^tdo,.*":
     description: Shangai Top Display Optoelectronics Co., Ltd
   "^technexion,.*":