Update SICRL_USBDR to reflect 4 different settings

This patch changed the SICRL_USBDR define to reflect the 4 different bit
settings for this two-bit field.  The four different options are '00', '01',
'10', and '11'.  This patch also corrects the config file for SIMPC8313 and
MPC8313ERDB for the appropriate fields.  This change only affects the MPC8313
cpu.

Signed-off-by: Ron Madrid <ron_madrid@sbcglobal.net>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>