dt-bindings: riscv: microchip: document beaglev-fire

The BeagleV Fire is a BeagleBone Black form-factor board with a
PolarFire SoC.

Link: https://www.beagleboard.org/boards/beaglev-fire
Acked-by: Rob Herring <[email protected]>
Signed-off-by: Conor Dooley <[email protected]>

Author: ConchuOD

Documentation/devicetree/bindings/riscv/microchip.yaml

@@ -29,6 +29,7 @@ properties:
           - enum:
               - aldec,tysom-m-mpfs250t-rev2
               - aries,m100pfsevp
+              - beagle,beaglev-fire
               - microchip,mpfs-sev-kit
               - sundance,polarberry
           - const: microchip,mpfs