dt-bindings: pinctrl: airoha: an7583: allow configuration of non-gpio default pins as gpio and pwm

Some AN7583 pins have non-gpio default settings. This patch provides a way
to configure such pins as GPIO or PWM. Also add gpio-range property in the
dts example.

Please note that gpio52 pin can't be configured as PWM pin.

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>

Documentation/devicetree/bindings/pinctrl/airoha,an7583-pinctrl.yaml

@@ -61,7 +61,7 @@ patternProperties:
             description:
               A string containing the name of the function to mux to the group.
             enum: [pon, tod_1pps, sipo, mdio, uart, i2c, jtag, pcm, spi,
-                   pcm_spi, emmc, pnand, pcie_reset, pwm, phy1_led0,
+                   pcm_spi, emmc, pnand, gpio, pcie_reset, pwm, phy1_led0,
                    phy2_led0, phy3_led0, phy4_led0, phy1_led1, phy2_led1,
                    phy3_led1, phy4_led1]
 
@@ -177,6 +177,16 @@ patternProperties:
               properties:
                 groups:
                   enum: [pnand]
+          - if:
+              properties:
+                function:
+                  const: gpio
+            then:
+              properties:
+                groups:
+                  enum: [gpio39, gpio40, gpio41, gpio42, gpio43, gpio44,
+                         gpio45, gpio46, gpio47, gpio48, gpio49, gpio50,
+                         gpio51, gpio52]
           - if:
               properties:
                 function:
@@ -199,7 +209,7 @@ patternProperties:
                          gpio26, gpio27, gpio28, gpio29, gpio30, gpio31,
                          gpio36, gpio37, gpio38, gpio39, gpio40, gpio41,
                          gpio42, gpio43, gpio44, gpio45, gpio46, gpio47,
-                         gpio48]
+                         gpio48, gpio49, gpio50, gpio51]
           - if:
               properties:
                 function:
@@ -337,6 +347,8 @@ examples:
       interrupt-controller;
       #interrupt-cells = <2>;
 
+      gpio-ranges = <&pinctrl 0 2 53>;
+
       pcie1-rst-pins {
         conf {
           pins = "pcie_reset1";