[CPUFREQ] acpi-cpufreq: Fix CPU_ANY CPUFREQ_{PRE,POST}CHANGE notification

Signed-off-by: Thomas Renninger <trenn@suse.de>
CC: venki@google.com
CC: davej@redhat.com
CC: arjan@infradead.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Dave Jones <davej@redhat.com>