dt-bindings: hisilicon: Add Hip05 and Hip06 system controller support

The Hip05 and Hip06 are very similar in design, use better and unified
name for system controller.
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt

@@ -175,38 +175,55 @@ Example:
 	};
 
 -----------------------------------------------------------------------
-Hisilicon HiP05 PCIe-SAS system controller
+Hisilicon HiP05/HiP06 PCIe-SAS sub system controller
 
 Required properties:
 - compatible : "hisilicon,pcie-sas-subctrl", "syscon";
 - reg : Register address and size
 
-The HiP05 PCIe-SAS system controller is shared by PCIe and SAS controllers in
-HiP05 Soc to implement some basic configurations.
+The PCIe-SAS sub system controller is shared by PCIe and SAS controllers in
+HiP05 or HiP06 Soc to implement some basic configurations.
 
 Example:
-	/* for HiP05 PCIe-SAS system */
-	pcie_sas: system_controller@0xb0000000 {
+	/* for HiP05 PCIe-SAS sub system */
+	pcie_sas: system_controller@b0000000 {
 		compatible = "hisilicon,pcie-sas-subctrl", "syscon";
 		reg = <0xb0000000 0x10000>;
 	};
 
-Hisilicon HiP05 PERISUB system controller
+Hisilicon HiP05/HiP06 PERI sub system controller
 
 Required properties:
-- compatible : "hisilicon,hip05-perisubc", "syscon";
+- compatible : "hisilicon,peri-subctrl", "syscon";
 - reg : Register address and size
 
-The HiP05 PERISUB system controller is shared by peripheral controllers in
-HiP05 Soc to implement some basic configurations. The peripheral
+The PERI sub system controller is shared by peripheral controllers in
+HiP05 or HiP06 Soc to implement some basic configurations. The peripheral
 controllers include mdio, ddr, iic, uart, timer and so on.
 
 Example:
-	/* for HiP05 perisub-ctrl-c system */
+	/* for HiP05 sub peri system */
 	peri_c_subctrl: syscon@80000000 {
-		compatible = "hisilicon,hip05-perisubc", "syscon";
+		compatible = "hisilicon,peri-subctrl", "syscon";
 		reg = <0x0 0x80000000 0x0 0x10000>;
 	};
+
+Hisilicon HiP05/HiP06 DSA sub system controller
+
+Required properties:
+- compatible : "hisilicon,dsa-subctrl", "syscon";
+- reg : Register address and size
+
+The DSA sub system controller is shared by peripheral controllers in
+HiP05 or HiP06 Soc to implement some basic configurations.
+
+Example:
+	/* for HiP05 dsa sub system */
+	pcie_sas: system_controller@a0000000 {
+		compatible = "hisilicon,dsa-subctrl", "syscon";
+		reg = <0xa0000000 0x10000>;
+	};
+
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 Hisilicon CPU controller