Fixing OLPC Crash Problem

Today I fixed OLPC crash problem. Problem is with lowraminit() function in memory.c Plan9 reads BIOS data area to figure out free memory below 640 K. But since OLPC doesn’t have a PC BIOS, I have modified the OLPC loader to write to BIOS data area that 639 KB is free.

Also I have updated x86amd table in devarch.c I have added Geode-LX processor entry to this table. So that Plan9 will be able to detect Geode processor correctly.