[PATCH] x86-64: fix x86_64-mm-sched-clock-share

Fix for the following patch. Provide dummy cpufreq functions when
CPUFREQ is not compiled in.

Cc: Andi Kleen <ak@suse.de>
Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@suse.de>