ata: ahci_imx: Clean up code by using i.MX8Q HSIO PHY driver

Clean up code by using PHY interface provided by the PHY driver under
PHY subsystem(drivers/phy/freescale/phy-fsl-imx8qm-hsio.c).

Signed-off-by: Richard Zhu <[email protected]>
Reviewed-by: Frank Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Niklas Cassel <[email protected]>

Author: Richard Zhu