dt-bindings: interrupt-controller: aspeed: Add AST2700 SCU IC compatibles

Add compatible strings for the four SCU interrupt controller instances
on the AST2700 SoC (scu-ic0 to 3), following the multi-instance model used
on AST2600.

Also define interrupt indices in the binding header.

Signed-off-by: Ryan Chen <[e-mail]>
Signed-off-by: Thomas Gleixner <[e-mail]>
Acked-by: Rob Herring (Arm) <[e-mail]>
Link: https://lore.kernel.org/all/[e-mail]

Documentation/devicetree/bindings/interrupt-controller/aspeed,ast2500-scu-ic.yaml

···
 $id: http://devicetree.org/schemas/interrupt-controller/aspeed,ast2500-scu-ic.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Aspeed AST25XX and AST26XX SCU Interrupt Controller
+title: Aspeed AST25XX, AST26XX, AST27XX SCU Interrupt Controller
 
 maintainers:
   - Eddie James <[e-mail]>
···
       - aspeed,ast2500-scu-ic
       - aspeed,ast2600-scu-ic0
       - aspeed,ast2600-scu-ic1
+      - aspeed,ast2700-scu-ic0
+      - aspeed,ast2700-scu-ic1
+      - aspeed,ast2700-scu-ic2
+      - aspeed,ast2700-scu-ic3
 
   reg:
     maxItems: 1

include/dt-bindings/interrupt-controller/aspeed-scu-ic.h

···
 #define ASPEED_AST2600_SCU_IC1_LPC_RESET_LO_TO_HI	0
 #define ASPEED_AST2600_SCU_IC1_LPC_RESET_HI_TO_LO	1
 
+#define ASPEED_AST2700_SCU_IC0_PCIE_PERST_LO_TO_HI	3
+#define ASPEED_AST2700_SCU_IC0_PCIE_PERST_HI_TO_LO	2
+
+#define ASPEED_AST2700_SCU_IC1_PCIE_RCRST_LO_TO_HI	3
+#define ASPEED_AST2700_SCU_IC1_PCIE_RCRST_HI_TO_LO	2
+
+#define ASPEED_AST2700_SCU_IC2_PCIE_PERST_LO_TO_HI	3
+#define ASPEED_AST2700_SCU_IC2_PCIE_PERST_HI_TO_LO	2
+#define ASPEED_AST2700_SCU_IC2_LPC_RESET_LO_TO_HI	1
+#define ASPEED_AST2700_SCU_IC2_LPC_RESET_HI_TO_LO	0
+
+#define ASPEED_AST2700_SCU_IC3_LPC_RESET_LO_TO_HI	1
+#define ASPEED_AST2700_SCU_IC3_LPC_RESET_HI_TO_LO	0
+
 #endif /* _DT_BINDINGS_INTERRUPT_CONTROLLER_ASPEED_SCU_IC_H_ */