mpc85xx: powerpc: usb: Enable Usb phy initialisation settings for P1010

CONFIG_SYS_FSL_USB1_PHY_ENABLE is set and the USB Phy
offset are set to enable the initial setting of Usb Phy for P1010.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>