dt-bindings: vendor-prefixes: add Indiedroid

Indiedroid is a sub-brand of Ameridroid for their line of single board
computers.
https://indiedroid.us/Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230531161220.280744-4-macroalpha82@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -617,6 +617,8 @@ patternProperties:
     description: Integrated Micro-Electronics Inc.
   "^incircuit,.*":
     description: In-Circuit GmbH
+  "^indiedroid,.*":
+    description: Indiedroid
   "^inet-tek,.*":
     description: Shenzhen iNet Mobile Internet Technology Co., Ltd
   "^infineon,.*":