dt-bindings: vendor-prefixes: Add FII

Adds Foxconn Industrial Internet, who have submitted a BMC device tree.

Reviewed-by: Benjamin Fair <[e-mail]>
Signed-off-by: Joel Stanley <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Rob Herring <[e-mail]>

Documentation/devicetree/bindings/vendor-prefixes.yaml

···
     description: Shenzhen Feixin Photoelectic Co., Ltd
   "^feiyang,.*":
     description: Shenzhen Fly Young Technology Co.,LTD.
+  "^fii,.*":
+    description: Foxconn Industrial Internet
   "^firefly,.*":
     description: Firefly
   "^focaltech,.*":