dt-bindings: vendor-prefix: Add prefix for Voltafield

Voltafile Technology Corp. is a company that produces MEMS sensors.

Add a DT vendor prefix for it.

Signed-off-by: Icenowy Zheng <[e-mail]>
Signed-off-by: Ondřej Jirman <[e-mail]>
Acked-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jonathan Cameron <[e-mail]>

Documentation/devicetree/bindings/vendor-prefixes.yaml

···
     description: VoCore Studio
   "^voipac,.*":
     description: Voipac Technologies s.r.o.
+  "^voltafield,.*":
+    description: Voltafield Technology Corp.
   "^vot,.*":
     description: Vision Optical Technology Co., Ltd.
   "^vxt,.*":