dt-bindings: phy: qcom,usb-hs-phy: Add compatible

Adds qcom,usb-hs-phy-msm8660 compatible

Used by HP Touchpad (tenderloin) for example.
Signed-off-by: Herman van Hazendonk <github.com@herrie.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240417065454.3599824-1-github.com@herrie.orgSigned-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.yaml

@@ -15,6 +15,7 @@ if:
       contains:
         enum:
           - qcom,usb-hs-phy-apq8064
+          - qcom,usb-hs-phy-msm8660
           - qcom,usb-hs-phy-msm8960
 then:
   properties:
@@ -41,6 +42,7 @@ properties:
       - enum:
           - qcom,usb-hs-phy-apq8064
           - qcom,usb-hs-phy-msm8226
+          - qcom,usb-hs-phy-msm8660
           - qcom,usb-hs-phy-msm8916
           - qcom,usb-hs-phy-msm8960
           - qcom,usb-hs-phy-msm8974