dt-bindings: vendor-prefixes: Add Mitsumi Electric Co., Ltd.

Mitsumi was [1] a Japanese company making various electronics devices
and components. They've merged into a new entity, MinebeaMitsumi in 2017.

Their current main page is available at [2]

[1] https://en.wikipedia.org/wiki/Mitsumi_Electric
[2] https://product.minebeamitsumi.com/en/

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230621-topic-mm8013-v4-1-975aecd173ed@linaro.org
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -871,6 +871,8 @@ patternProperties:
     description: MiraMEMS Sensing Technology Co., Ltd.
   "^mitsubishi,.*":
     description: Mitsubishi Electric Corporation
+  "^mitsumi,.*":
+    description: Mitsumi Electric Co., Ltd.
   "^mixel,.*":
     description: Mixel, Inc.
   "^miyoo,.*":