dt-bindings: pinctrl: qcom,sm8450-pinctrl: fix matching pin config

Matching PMIC GPIOs config nodes within a '-state' node by '.*' pattern
does not work as expected because of linux,phandle in the DTB:

  qcom/sm4250-oneplus-billie2.dtb: pinctrl@500000: sdc1-on-state: 'oneOf' conditional failed, one must be fixed:
    'pins' is a required property
    'clk', 'cmd', 'data', 'rclk' do not match any of the regexes: 'pinctrl-[0-9]+'
    [[26]] is not of type 'object'

Make the schema stricter and expect such nodes to be followed with a
'-pins' suffix.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220912061746.6311-20-krzysztof.kozlowski@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/qcom,sm8450-pinctrl.yaml

@@ -43,8 +43,9 @@ patternProperties:
     oneOf:
       - $ref: "#/$defs/qcom-sm8450-tlmm-state"
       - patternProperties:
-          ".*":
+          "-pins$":
             $ref: "#/$defs/qcom-sm8450-tlmm-state"
+        additionalProperties: false
 
 $defs:
   qcom-sm8450-tlmm-state:
@@ -127,13 +128,13 @@ examples:
                 };
 
                 uart-w-subnodes-state {
-                    rx {
+                    rx-pins {
                             pins = "gpio26";
                             function = "qup7";
                             bias-pull-up;
                     };
 
-                    tx {
+                    tx-pins {
                             pins = "gpio27";
                             function = "qup7";
                             bias-disable;