Add compatible string for USB3 PHY in Qualcomm IPQ6018 SoC.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Link: https://lore.kernel.org/r/3d86f45004fe2fcbae0a2cd197df81a1fd076a1e.1628085910.git.baruch@tkos.co.ilSigned-off-by: Vinod Koul <vkoul@kernel.org>