x86_64: simplify cpufreq build

Instead of copying the i386 Makefile and handling path substitutions
just use the i386 cpufreq Makefile.

Signed-off-by: Thomas Gleixner <[email protected]>

Author: KAGA-KOKO

arch/x86_64/kernel/Makefile

@@ -27,7 +27,7 @@ obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel.o crash.o
 obj-$(CONFIG_CRASH_DUMP)	+= crash_dump.o
 obj-$(CONFIG_PM)		+= suspend.o
 obj-$(CONFIG_HIBERNATION)	+= suspend_asm.o
-obj-$(CONFIG_CPU_FREQ)		+= cpufreq/
+obj-$(CONFIG_CPU_FREQ)		+= ../../i386/kernel/cpu/cpufreq/
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
 obj-$(CONFIG_IOMMU)		+= pci-gart.o aperture.o
 obj-$(CONFIG_CALGARY_IOMMU)	+= pci-calgary.o tce.o