dt-bindings: sram: sunxi-sram: Add A100 compatible

The Allwinner A100 has a system configuration block similar to that of
the A64 and H6. Add a compatible for it.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Cody Eksal <masterr3c0rd@epochal.quest>
Link: https://patch.msgid.link/20241218-a100-syscon-v2-1-dae60b9ce192@epochal.quest
Signed-off-by: Chen-Yu Tsai <wens@csie.org>

Author: BrokenR3C0RD

Documentation/devicetree/bindings/sram/allwinner,sun4i-a10-system-control.yaml

@@ -47,7 +47,9 @@ properties:
           - const: allwinner,sun8i-v3s-system-control
           - const: allwinner,sun8i-h3-system-control
       - items:
-          - const: allwinner,sun50i-h6-system-control
+          - enum:
+              - allwinner,sun50i-a100-system-control
+              - allwinner,sun50i-h6-system-control
           - const: allwinner,sun50i-a64-system-control
 
   reg: