ENGR00225131-04 MX6 USB: implement platform_phy_power_on for USB otg and h1

ENGR00225131-04 MX6 USB: implement platform_phy_power_on for USB otg and h1

IC designer had clarified that 1P1 can be turned off if we do not need support
remote wakeup. So If there is no requirement for USB remote wake up, the 1P1
can be turn off. USB driver will support dynamically turn on(off) 1P1 during
system suspend. 1P1 will be turn on depend on USB wakeup is enabled.

Set stop_mode_config bit to turn on 1P1 during system suspend to support USB
host remote wake up or USB device DP/DM wake up.

Signed-off-by: make shi <b15407@freescale.com>