dt-bindings: interrupt-controller: Add Anlogic DR1V90 PLIC

Add PLIC support for Anlogic DR1V90.

Signed-off-by: Junhui Liu <junhui.liu@pigmoral.tech>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20251021-dr1v90-basic-dt-v3-4-5478db4f664a@pigmoral.tech

Author: pigmoral

Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml

@@ -58,6 +58,7 @@ properties:
           - const: andestech,nceplic100
       - items:
           - enum:
+              - anlogic,dr1v90-plic
               - canaan,k210-plic
               - eswin,eic7700-plic
               - sifive,fu540-c000-plic