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IPQ8074 has 2 different single lane PCIe PHY-s, one Gen2 and one Gen3. Gen2 one is already supported, so add the support for the Gen3 one. It uses the same register layout as IPQ6018. Signed-off-by: Robert Marko <robimarko@gmail.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220621195512.1760362-3-robimarko@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>