mpc7448hpc2: Add CONFIG_SYS_I2C_SPEED define

Add standard CONFIG_SYS_I2C_SPEED define for the mpc7448hpc2 so that
it can use the common 'i2c speed' command.  Note that the I2C controller
utilized by the mpc7448hpc2 has a fixed speed and cannot be changed
dynamically.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
1 file changed