dt-bindings: phy: qcom,snps-eusb2-repeater: Remove default tuning values

The reset default tuning value depends on the PMIC, so remove them from
the doc since they're not accurate for all PMICs.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Link: https://lore.kernel.org/r/20250617-eusb2-repeater-tuning-v2-1-ed6c484f18ee@fairphone.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: lweiss-fairphone

Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml

@@ -39,21 +39,18 @@ properties:
     description: High-Speed disconnect threshold
     minimum: 0
     maximum: 7
-    default: 0
 
   qcom,tune-usb2-amplitude:
     $ref: /schemas/types.yaml#/definitions/uint8
     description: High-Speed transmit amplitude
     minimum: 0
     maximum: 15
-    default: 8
 
   qcom,tune-usb2-preem:
     $ref: /schemas/types.yaml#/definitions/uint8
     description: High-Speed TX pre-emphasis tuning
     minimum: 0
     maximum: 7
-    default: 5
 
 required:
   - compatible