dt-bindings: phy: imx8mq-usb: fix fsl,phy-tx-vboost-level-microvolt property

The ticket TKT0676370 shows the description of TX_VBOOST_LVL is wrong in
register PHY_CTRL3 bit[31:29].

  011: Corresponds to a launch amplitude of 1.12 V.
  010: Corresponds to a launch amplitude of 1.04 V.
  000: Corresponds to a launch amplitude of 0.88 V.

After updated:

  011: Corresponds to a launch amplitude of 0.844 V.
  100: Corresponds to a launch amplitude of 1.008 V.
  101: Corresponds to a launch amplitude of 1.156 V.

This will correct it accordingly.

Fixes: b2e7556 ("dt-bindings: phy: imx8mq-usb: add phy tuning properties")
Cc: [email protected]
Reviewed-by: Jun Li <[email protected]>
Signed-off-by: Xu Yang <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: Xu Yang

Documentation/devicetree/bindings/phy/fsl,imx8mq-usb-phy.yaml

@@ -63,8 +63,7 @@ properties:
   fsl,phy-tx-vboost-level-microvolt:
     description:
       Adjust the boosted transmit launch pk-pk differential amplitude
-    minimum: 880
-    maximum: 1120
+    enum: [844, 1008, 1156]
 
   fsl,phy-comp-dis-tune-percent:
     description: