[U-Boot] Incorrect CONFIG_SYS_MONITOR_LEN on MPC85xx boards

Hi,

All FSL MPC85xx boards define CONFIG_SYS_MONITOR_LEN as 256K although actual size of u-boot binary is 512K. XES Xpedite boards seem to do the right thing.

I was wandering whether CONFIG_SYS_MONITOR_LEN for 85xx boards can be defined in terms of CONFIG_SYS_MONITOR_BASE, similar to AMCC boards ?

#define CONFIG_SYS_MONITOR_LEN (0xFFFFFFFF - CONFIG_SYS_MONITOR_BASE + 1)

Felix.