phy: qcom-qmp: add USB3 PHY support for IPQ6018

Initialization is identical to the IPQ8074 USB3 PHY.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Link: https://lore.kernel.org/r/6eec7ef4ecd1e8360ebe8e425151121684e997ed.1628085910.git.baruch@tkos.co.il


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