Documentation: Bindings: Update DT binding for hns dsaf node

This patch changes property port-id to reg in dsaf port node,
removes property cpld-ctrl-reg, and fixes some typos.

Signed-off-by: Yisen Zhuang <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt

···
 - interrupts: should contain the DSA Fabric and rcb interrupt.
 - reg: specifies base physical address(es) and size of the device registers.
   The first region is external interface control register base and size(optional,
-  only be used when subctrl-syscon is not exists). It is recommended using
+  only used when subctrl-syscon does not exist). It is recommended using
   subctrl-syscon rather than this address.
-  The second region is SerDes base register and size(optional, only be used when
-  serdes-syscon in port node is not exists. It is recommended using
+  The second region is SerDes base register and size(optional, only used when
+  serdes-syscon in port node does not exist). It is recommended using
   serdes-syscon rather than this address.
   The third region is the PPE register base and size.
   The fourth region is dsa fabric base register and size. It is not required for
···
 - reg-names: may be ppe-base and(or) dsaf-base. It is used to find the
   corresponding reg's index.
 
-- phy-handle: phy handle of physicl port, 0 if not any phy device. It is optional
-  attribute. If port node is exists, phy-handle in each port node will be used.
+- phy-handle: phy handle of physical port, 0 if not any phy device. It is optional
+  attribute. If port node exists, phy-handle in each port node will be used.
   see ethernet.txt [1].
 - subctrl-syscon: is syscon handle for external interface control register.
 - reset-field-offset: is offset of reset field. Its value depends on the hardware
···
 
 - port: subnodes of dsaf. A dsaf node may contain several port nodes(Depending
   on mode of dsaf). Port node contain some attributes listed below:
-- port-id: is physical port index in one dsaf.
-- phy-handle: phy handle of physicl port. It is not required if there isn't
+- reg: is physical port index in one dsaf.
+- phy-handle: phy handle of physical port. It is not required if there isn't
   phy device. see ethernet.txt [1].
 - serdes-syscon: is syscon handle for SerDes register.
-- cpld-syscon: is syscon handle for cpld register. It is not required if there
-  isn't cpld device.
-- cpld-ctrl-reg: is cpld register offset. It is not required if there isn't
-  cpld-syscon.
+- cpld-syscon: is syscon handle + register offset pair for cpld register. It is
+  not required if there isn't cpld device.
 - port-rst-offset: is offset of reset field for each port in dsaf. Its value
   depends on the hardware user manual.
 - port-mode-offset: is offset of port mode field for each port in dsaf. Its
···
 	desc-num = <1024>;
 	dma-coherent;
 
-	prot@0 {
-		port-id = 0;
+	port@0 {
+		reg = 0;
 		phy-handle = <&phy0>;
 		serdes-syscon = <&serdes>;
 	};
 
-	prot@1 {
-                port-id = 1;
+	port@1 {
+                reg = 1;
                 serdes-syscon = <&serdes>;
         };
 };