ahci: qoriq: refine port register configuration

These PP2C and PP3C registers control the configuration of the PHY
control OOB timing for the COMINIT/COMWAKE parameters respectively
for sata port. Overwrite default values with calculated ones to get
better OOB timing.

Signed-off-by: Tang Yuantian <andy.tang@nxp.com>
Signed-off-by: Tejun Heo <tj@kernel.org>