[LinuxBIOS] copy_secondary_start_to_1m_below() and non-smp

[Richard Smith]

While merging in my 440bx patchs to the latest revision I got
unresolved references to the
copy_secondary_start_to_1m_below() function.

if CONFIG_SMP != 1 then this function never gets defined but
initialize_cpus() calls it regardless.

Will copy_secondary_start_to_1m_below() ever be used in the non-smp
case?  If so then it needs a CONFIG_SMP wrapper or needs to get
defined as empty in the #else case of CONFIG_SMP.