powerpc/85xx: Add ULPI and UTMI USB Phy support for P1010/P1014

powerpc/85xx: Add ULPI and UTMI USB Phy support for P1010/P1014

Add UTMI and ULPI PHY support for USB controller on qoriq series of
processors with internal UTMI PHY implemented, for example P1010/P1014
 - Use both getenv() and hwconfig to get USB phy type till getenv()
   is depricated
 - Introduce CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY to specify if soc
   has internal UTMI phy

Signed-off-by: Ramneek Mehresh <[email protected]>
Acked-by: Remy Bohmer <[email protected]>
Signed-off-by: Kumar Gala <[email protected]>