staging: wilc1000: updated DT binding documentation

Merged the DT binding documentation of SDIO and SPI into a single file.
Removed documentation for some of the properties which are not required
and handled review comments received in [1] & [2].

[1]. https://lore.kernel.org/linux-wireless/20200303020230.GA15543@bogus
[2]. https://lore.kernel.org/linux-wireless/20200303015558.GA6876@bogusSigned-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200307085523.7320-4-ajay.kathat@microchip.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/microchip,wilc1000,spi.yaml

-# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/net/wireless/microchip,wilc1000,spi.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: Microchip WILC wireless SPI devicetree bindings
-
-maintainers:
-  - Adham Abozaeid <adham.abozaeid@microchip.com>
-  - Ajay Singh <ajay.kathat@microchip.com>
-
-description:
-  The wilc1000 chips can be connected via SPI. This document describes
-  the binding for the SPI connected module.
-
-properties:
-  compatible:
-    const: microchip,wilc1000-spi
-
-  spi-max-frequency:
-    description: Maximum SPI clocking speed of device in Hz.
-    maxItems: 1
-
-  reg:
-    description: Chip select address of device.
-    maxItems: 1
-
-  irq-gpios:
-    description: The GPIO phandle connect to a host IRQ.
-    maxItems: 1
-
-  clocks:
-    description: phandle to the clock connected on rtc clock line.
-    maxItems: 1
-
-required:
-  - compatible
-  - spi-max-frequency
-  - reg
-  - irq-gpios
-
-examples:
-  - |
-    spi1: spi@fc018000 {
-      #address-cells = <1>;
-      #size-cells = <0>;
-      cs-gpios = <&pioB 21 0>;
-      status = "okay";
-      wilc_spi@0 {
-        compatible = "microchip,wilc1000-spi";
-        spi-max-frequency = <48000000>;
-        reg = <0>;
-        irq-gpios = <&pioC 27 0>;
-        clocks = <&pck1>;
-        clock-names = "rtc_clk";
-        assigned-clocks = <&pck1>;
-        assigned-clock-rates = <32768>;
-        status = "okay";
-      };
-    };

drivers/staging/wilc1000/microchip,wilc1000,sdio.yaml → drivers/staging/wilc1000/microchip,wilc1000.yaml

 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/net/wireless/microchip,wilc1000,sdio.yaml#
+$id: http://devicetree.org/schemas/net/wireless/microchip,wilc1000.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Microchip WILC wireless SDIO devicetree bindings
+title: Microchip WILC wireless devicetree bindings
 
 maintainers:
   - Adham Abozaeid <adham.abozaeid@microchip.com>
   - Ajay Singh <ajay.kathat@microchip.com>
 
 description:
-  The wilc1000 chips can be connected via SDIO. The node is used to
-  specify child node to the SDIO controller that connects the device
-  to the system.
+  The wilc1000 chips can be connected via SPI or SDIO. This document
+  describes the binding to connect wilc devices.
 
 properties:
   compatible:
-    const: microchip,wilc1000-sdio
+    const: microchip,wilc1000
 
-  irq-gpios:
-    description: The GPIO phandle connect to a host IRQ.
-    maxItems: 1
+  spi-max-frequency: true
 
-  reg:
-    description: Slot ID used in the controller.
+  interrupts:
     maxItems: 1
 
   clocks:
     description: phandle to the clock connected on rtc clock line.
     maxItems: 1
 
-  bus-width:
-    description: The number of data lines wired up the slot.
-    allOf:
-      - $ref: /schemas/types.yaml#/definitions/uint32
-      - enum: [1, 4, 8]
-      - default: 1
+  clock-names:
+    const: rtc
 
 required:
   - compatible
-  - irq-gpios
-  - reg
+  - interrupts
 
 examples:
+  - |
+    spi1: spi@fc018000 {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      cs-gpios = <&pioB 21 0>;
+      wifi@0 {
+        compatible = "microchip,wilc1000";
+        spi-max-frequency = <48000000>;
+        reg = <0>;
+        interrupt-parent = <&pioC>;
+        interrupts = <27 0>;
+        clocks = <&pck1>;
+        clock-names = "rtc";
+      };
+    };
+
   - |
     mmc1: mmc@fc000000 {
       #address-cells = <1>;
@@ -53,16 +60,13 @@ examples:
       non-removable;
       vmmc-supply = <&vcc_mmc1_reg>;
       vqmmc-supply = <&vcc_3v3_reg>;
-      status = "okay";
-      wilc_sdio@0 {
-        compatible = "microchip,wilc1000-sdio";
-          irq-gpios = <&pioC 27 0>;
+      bus-width = <4>;
+      wifi@0 {
+        compatible = "microchip,wilc1000";
         reg = <0>;
+        interrupt-parent = <&pioC>;
+        interrupts = <27 0>;
         clocks = <&pck1>;
-          clock-names = "rtc_clk";
-          assigned-clocks = <&pck1>;
-          assigned-clock-rates = <32768>;
-          status = "okay";
-          bus-width = <4>;
+        clock-names = "rtc";
       };
     };