dt-bindings: mfd: allwinner,sun6i-a31-prcm: Use hyphens in node names

Underscores should not be used in node names (dtc with W=2 warns about
them), so replace them with hyphens.  This should have no impact on
known users: Linux MFD driver does not care about children node names.
DTS was already adjusted in commit 0f47ef3 ("arm: dts: allwinner: drop
underscore in node names"), so without this change, we observe
dtbs_check warnings:

  sun6i-a31s-colorfly-e708-q1.dtb: prcm@1f01400: 'ahb0-clk', 'apb0-clk', 'apb0-gates-clk', 'apb0-rst', 'ar100-clk', 'ir-clk' do not match any of the regexes: '^.*_(clk|rst)$', 'pinctrl-[0-9]+'

Reported-by: Rob Herring <[email protected]>
Closes: https://lore.kernel.org/all/CAL_JsqJfT-jui5P56CO4Fr37kr5iNN8dpxt8ecKeFmdVGnRYbA@mail.gmail.com/
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Jernej Skrabec <[email protected]>
Acked-by: Rob Herring (Arm) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: krzk

Documentation/devicetree/bindings/mfd/allwinner,sun6i-a31-prcm.yaml

@@ -20,7 +20,7 @@ properties:
     maxItems: 1
 
 patternProperties:
-  "^.*_(clk|rst)$":
+  "^.*-(clk|rst)$":
     type: object
     unevaluatedProperties: false
 
@@ -171,7 +171,7 @@ examples:
         compatible = "allwinner,sun6i-a31-prcm";
         reg = <0x01f01400 0x200>;
 
-        ar100: ar100_clk {
+        ar100: ar100-clk {
             compatible = "allwinner,sun6i-a31-ar100-clk";
             #clock-cells = <0>;
             clocks = <&rtc 0>, <&osc24M>,
@@ -180,7 +180,7 @@ examples:
             clock-output-names = "ar100";
         };
 
-        ahb0: ahb0_clk {
+        ahb0: ahb0-clk {
             compatible = "fixed-factor-clock";
             #clock-cells = <0>;
             clock-div = <1>;
@@ -189,14 +189,14 @@ examples:
             clock-output-names = "ahb0";
         };
 
-        apb0: apb0_clk {
+        apb0: apb0-clk {
             compatible = "allwinner,sun6i-a31-apb0-clk";
             #clock-cells = <0>;
             clocks = <&ahb0>;
             clock-output-names = "apb0";
         };
 
-        apb0_gates: apb0_gates_clk {
+        apb0_gates: apb0-gates-clk {
             compatible = "allwinner,sun6i-a31-apb0-gates-clk";
             #clock-cells = <1>;
             clocks = <&apb0>;
@@ -206,14 +206,14 @@ examples:
                                  "apb0_i2c";
         };
 
-        ir_clk: ir_clk {
+        ir_clk: ir-clk {
             #clock-cells = <0>;
             compatible = "allwinner,sun4i-a10-mod0-clk";
             clocks = <&rtc 0>, <&osc24M>;
             clock-output-names = "ir";
         };
 
-        apb0_rst: apb0_rst {
+        apb0_rst: apb0-rst {
             compatible = "allwinner,sun6i-a31-clock-reset";
             #reset-cells = <1>;
         };