dt-bindings: interrupt-controller: Add Sophgo SG2044 PLIC

The SG2044 implement a standard T-HEAD C900 PLIC, which is
already supported by the kernel.

Add compatible string for Sophgo SG2044 plic.

Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250413223507.46480-5-inochiama@gmail.com
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
Signed-off-by: Chen Wang <wangchen20@iscas.ac.cn>

Author: inochisa

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

@@ -70,6 +70,7 @@ properties:
               - sophgo,cv1812h-plic
               - sophgo,sg2002-plic
               - sophgo,sg2042-plic
+              - sophgo,sg2044-plic
               - thead,th1520-plic
           - const: thead,c900-plic
       - items: