[CPUFREQ] use dynamic debug instead of custom infrastructure

With dynamic debug having gained the capability to report debug messages
also during the boot process, it offers a far superior interface for
debug messages than the custom cpufreq infrastructure. As a first step,
remove the old cpufreq_debug_printk() function and replace it with a call
to the generic pr_debug() function.

How can dynamic debug be used on cpufreq? You need a kernel which has
CONFIG_DYNAMIC_DEBUG enabled.

To enabled debugging during runtime, mount debugfs and

$ echo -n 'module cpufreq +p' > /sys/kernel/debug/dynamic_debug/control

for debugging the complete "cpufreq" module. To achieve the same goal during
boot, append

	ddebug_query="module cpufreq +p"

as a boot parameter to the kernel of your choice.

For more detailled instructions, please see
Documentation/dynamic-debug-howto.txt

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dave Jones <davej@redhat.com>

Conflicts:

	arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
	arch/x86/kernel/cpu/cpufreq/cpufreq-nforce2.c
	arch/x86/kernel/cpu/cpufreq/gx-suspmod.c
	arch/x86/kernel/cpu/cpufreq/longhaul.c
	arch/x86/kernel/cpu/cpufreq/longrun.c
	arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
	arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c
	arch/x86/kernel/cpu/cpufreq/powernow-k7.c
	arch/x86/kernel/cpu/cpufreq/powernow-k8.c
	arch/x86/kernel/cpu/cpufreq/powernow-k8.h
	arch/x86/kernel/cpu/cpufreq/sc520_freq.c
	arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
	arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
	arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
	arch/x86/kernel/cpu/cpufreq/speedstep-smi.c
	drivers/cpufreq/cpufreq.c
	drivers/cpufreq/cpufreq_userspace.c