phy: freescale: imx8m-pcie: Refine i.MX8MM PCIe PHY driver

To make it more flexible and easy to expand. Refine i.MX8MM PCIe PHY
driver.
- Use gpr compatible string to avoid the codes duplications when add
  another platform PCIe PHY support.
- Re-arrange the codes to let it more flexible and easy to expand.
No functional change. Re-arrange the TX tuning, since internal registers
can be wrote through APB interface before assertion of CMN_RST.

Signed-off-by: Richard Zhu <[email protected]>
Signed-off-by: Lucas Stach <[email protected]>
Tested-by: Marek Vasut <[email protected]>
Tested-by: Richard Leitner <[email protected]>
Tested-by: Alexander Stein <[email protected]>
Reviewed-by: Lucas Stach <[email protected]>
Reviewed-by: Ahmad Fatoum <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

0 files changed, 0 insertions, 0 deletions