dt-bindings: pinctrl: qcom,sc7280-lpass-lpi: add bias-bus-hold

The existing SC7280 LPASS pin controller nodes use bias-bus-hold, so
allow it.  Squash also blank lines for readability.
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220927153429.55365-12-krzysztof.kozlowski@linaro.orgSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Documentation/devicetree/bindings/pinctrl/qcom,sc7280-lpass-lpi-pinctrl.yaml

@@ -91,13 +91,10 @@ $defs:
             3: Reserved (No adjustments)
 
       bias-pull-down: true
-
       bias-pull-up: true
-
+      bias-bus-hold: true
       bias-disable: true
-
       output-high: true
-
       output-low: true
 
     required: