dt-bindings: vendors: add Elimo Engineering vendor prefix

Add elimo as vendor prefix for dt bindings, since we are adding a dtsi
for a SoM and a dts for an SBC

Signed-off-by: Matteo Scordino <[e-mail]>
Signed-off-by: Maxime Ripard <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/vendor-prefixes.yaml

···
     description: Elgin S/A.
   "^elida,.*":
     description: Shenzhen Elida Technology Co., Ltd.
+  "^elimo,.*":
+    description: Elimo Engineering Ltd.
   "^embest,.*":
     description: Shenzhen Embest Technology Co., Ltd.
   "^emlid,.*":