Add compatible string for T-HEAD TH1520 plic.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
---
 .../bindings/interrupt-controller/sifive,plic-1.0.0.yaml         | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
index f75736a061af..0fa9b862e4a5 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
@@ -65,6 +65,7 @@ properties:
       - items:
           - enum:
               - allwinner,sun20i-d1-plic
+              - thead,th1520-plic
           - const: thead,c900-plic
       - items:
           - const: sifive,plic-1.0.0
-- 
2.40.0