2.4.19 compile warning for AMD Athlon config

[John Kinsella]

amd_adv_spec_cache_feature() tries to use have_cpuid_p(), which does not
exist in 2.4.x tree. 

This seems to have been introduced in 2.4.19-rc1, I guess I should have noticed it before.
A case of 2.4 being too stable perhaps, as it works fine so I didn't check compile log :)

/home/compo/2.4/2.4.19/arch/i386/kernel/setup.c: In function `amd_adv_spec_cache_feature':
/home/compo/2.4/2.4.19/arch/i386/kernel/setup.c:751: warning: implicit declaration of func
tion `have_cpuid_p'
/home/compo/2.4/2.4.19/arch/i386/kernel/setup.c: At top level:
/home/compo/2.4/2.4.19/arch/i386/kernel/setup.c:2629: warning: `have_cpuid_p' was declared
 implicitly `extern' and later `static'
/home/compo/2.4/2.4.19/arch/i386/kernel/setup.c:751: warning: previous declaration of `hav
 e_cpuid_p'

$ grep -nr have_cpuid_p *h
 arch/i386/kernel/setup.c:751:   if(!have_cpuid_p())
 arch/i386/kernel/setup.c:2628:static int __init have_cpuid_p(void)
 arch/i386/kernel/setup.c:2708:  return have_cpuid_p();  /* Check to see if CPUID now enabled? */
 arch/i386/kernel/setup.c:2728:  if ( !have_cpuid_p() && !id_and_try_enable_cpuid(c) ) {
 arch/i386/kernel/setup.c:3164:  if(!have_cpuid_p())

#
# Processor type and features
#
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M586MMX is not set
# CONFIG_M686 is not set
# CONFIG_MPENTIUMIII is not set
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
CONFIG_MK7=y
# CONFIG_MELAN is not set
# CONFIG_MCRUSOE is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP2 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MCYRIXIII is not set
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_CMPXCHG=y
CONFIG_X86_XADD=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_TSC=y
CONFIG_X86_GOOD_APIC=y
CONFIG_X86_USE_3DNOW=y
CONFIG_X86_PGE=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_MCE=y
# CONFIG_TOSHIBA is not set
# CONFIG_I8K is not set
# CONFIG_MICROCODE is not set
# CONFIG_X86_MSR is not set
# CONFIG_X86_CPUID is not set
CONFIG_NOHIGHMEM=y
# CONFIG_HIGHMEM4G is not set
# CONFIG_HIGHMEM64G is not set
# CONFIG_MATH_EMULATION is not set
CONFIG_MTRR=y
# CONFIG_SMP is not set
CONFIG_X86_UP_APIC=y
CONFIG_X86_UP_IOAPIC=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y