*. 3a780e, 3aserver, 3c780e and 3cserver all use core 0 as BP
and boot all other core, this is compatiable to previous version;
*. When changing the BOOTCORE_ID and/or RESERVED_COREMASK, you
NEED "make cfg", to let it take effect
Change-Id: I8d6485407408baa969fce4f5473cabc4c2ee40af