dt-bindings: pinctrl: rt2880: fix binding name, pin groups and functions

Deprecate the old property "ralink,rt2880-pinmux". Add the new property
"ralink,rt2880-pinctrl". The old property name was inaccurate as the
hardware block is called pinctrl across the Mediatek/Ralink architecture.

Current pin group and function bindings are for MT7621. Put bindings for
RT2880 instead.

Add me as a maintainer.

Signed-off-by: Arınç ÜNAL <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
Acked-by: Sergio Paracuellos <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinmux.yaml Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinctrl.yaml

···
 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/pinctrl/ralink,rt2880-pinmux.yaml#
+$id: http://devicetree.org/schemas/pinctrl/ralink,rt2880-pinctrl.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Ralink rt2880 pinmux controller
+title: Ralink RT2880 Pin Controller
 
 maintainers:
+  - Arınç ÜNAL <[e-mail]>
   - Sergio Paracuellos <[e-mail]>
 
 description:
-  The rt2880 pinmux can only set the muxing of pin groups. Muxing indiviual pins
-  is not supported. There is no pinconf support.
+  Ralink RT2880 pin controller for RT2880 SoC.
+  The pin controller can only set the muxing of pin groups. Muxing individual
+  pins is not supported. There is no pinconf support.
 
 properties:
   compatible:
-    const: ralink,rt2880-pinmux
+    const: ralink,rt2880-pinctrl
 
 patternProperties:
   '-pins$':
···
 
         properties:
           groups:
-            description: Name of the pin group to use for the functions.
-            enum: [i2c, jtag, mdio, pcie, rgmii1, rgmii2, sdhci, spi,
-                   uart1, uart2, uart3, wdt]
+            description: The pin group to select.
+            enum: [i2c, spi, uartlite, jtag, mdio, sdram, pci]
+
           function:
-            description: The mux function to select
-            enum: [gpio, i2c, i2s, jtag, mdio, nand1, nand2, pcie refclk,
-                   pcie rst, pcm, rgmii1, rgmii2, sdhci, spdif2, spdif3,
-                   spi, uart1, uart2, uart3, wdt refclk, wdt rst]
+            description: The mux function to select.
+            enum: [gpio, i2c, spi, uartlite, jtag, mdio, sdram, pci]
 
         required:
           - groups
···
   # Pinmux controller node
   - |
     pinctrl {
-      compatible = "ralink,rt2880-pinmux";
+      compatible = "ralink,rt2880-pinctrl";
 
       i2c_pins: i2c0-pins {
         pinmux {