dt-bindings: phy: qcom,usb-snps-femto-v2: Add bindings for SM8450

Document the compatible string for USB phy found in Qualcomm SM8450 SoC

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211213131450.535775-1-vkoul@kernel.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>